Southern Water 2025/26: Leakage, Pollution and £7bn Debt — Long Read
Southern Water cut leakage sharply during 2025/26, but still lost almost 90 million litres of treated water every day — enough over the year to fill Bewl Water reservoir and carry on leaking. Behind that eye-watering total sit 12 serious pollution incidents, wastewater permit compliance of just 54.2%, financial controls Deloitte wouldn’t rely upon, a headline loss £15.7 million below the audited figure and a turnaround kept afloat by higher bills, £900 million from shareholders and almost £2 billion of new borrowing.
Southern Water’s two annual reports run to 385 pages between them. They contain some proper improvements, a fair bit of corporate gloss and enough contradictory figures to make a calculator reach for the aspirin. So let’s begin where any story about a water company ought to begin: with the water.
Leakage fell — but more than a Bewl Water still slipped away
Southern Water reduced its annual leakage from 101.6 million litres a day in 2024/25 to 89.8 million litres in 2025/26. That’s a drop of 11.8 million litres a day, or about 11.6%. It’s a solid improvement and deserves to be recognised as such.
Translated out of water-industry gobbledegook, the daily saving is equivalent to about 4.7 Olympic-sized swimming pools. Across an average month, Southern Water saved roughly 144 pools; across the year, around 1,723. That annual saving — some 4.307 billion litres — amounts to nearly 13.9% of Bewl Water’s total capacity. The calculation uses 2.5 million litres for an Olympic-sized pool and Southern Water’s stated Bewl capacity of 31,000 megalitres, or 31 billion litres.
So far, so good.
The rub is what remained. At 89.8 million litres a day, Southern Water was still losing the equivalent of 35.9 Olympic pools every 24 hours, 1,093 pools in an average month and 13,111 pools across a 365-day year.
The annual loss comes to approximately 32.777 billion litres. Bewl Water holds 31 billion litres, meaning the reported leakage would fill the entire reservoir and leave enough water to fill another 5.7% of it. Put bluntly, more than one Bewl Water leaked away during the year.
There is an important qualification. Southern Water’s leakage measure includes losses from its own network and customer supply pipes. It isn’t saying every last drop escaped from a company-owned main. Even with that caveat, 89.8 million litres a day is still a ruddy great hole in the bucket.
The reporting around the improvement is unnecessarily muddled. The underlying performance table uses 101.6 million litres a day as the previous annual result. A performance summary instead says annual leakage fell from 101.1 to 89.8 million litres a day, apparently treating the previous rolling-average figure as though it were the annual comparator. Elsewhere, Southern Water says annual leakage fell from 100.7 to 89.8 million litres a day and that the three-year rolling average moved from a PR24 baseline of 105.4 to 101.1. Three different starting points are left bobbing about in the same report.
The underlying 101.6 figure is also the baseline Southern Water uses when describing its planned 34.7% leakage reduction by 2030. That makes it the clearest like-for-like annual comparator for the latest 89.8 result. The improvement survives the confusion; the reporting shouldn’t have created it in the first place.
Southern Water’s water-balance gap was separately rated red at 4.77%. That doesn’t cancel the leakage result, which was within the scope of independent limited assurance, but it does underline why the company needs to keep annual results, rolling averages and planning baselines in their proper boxes rather than tipping them all into the same paddling pool.
Pollution remains the filthy stain on the turnaround
Southern Water recorded 254 Category 1–3 wastewater pollution incidents during the year: one Category 1 incident, 11 Category 2 incidents and 242 Category 3 incidents. That was down from the Environment Agency’s figure of 269 incidents for calendar year 2024, so the total is heading in the right direction.
Serious pollution didn’t improve. Southern Water recorded 12 serious incidents, exactly the same number as the previous year. Its own annual report doesn’t try to put lipstick on that particular pig, admitting that “the level of serious pollutions remains unacceptable.”
Quite.
Those 12 incidents triggered an estimated performance penalty of £17.13 million. The wider pollution measure added another £14.06 million penalty. Between them, pollution performance put more than £31 million on the wrong side of the regulatory ledger before other rewards and penalties were taken into account.
Storm-overflow performance also missed its target. Southern Water reported an adjusted average of 21.11 spills per overflow, against a target of 17.99. The raw figures show 15,554 monitored spills across 977 overflows, with an additional adjustment for sites where monitoring coverage wasn’t complete.
There were also 149 dry-day pollution incidents in the underlying table. Dry-day spills are particularly awkward because there’s no biblical downpour to hide behind. When the weather’s dry, the usual corporate umbrella marked “exceptional rainfall” is of rather limited use.
The company says burst rising mains and blockages were the main causes of serious pollution. It has carried out end-to-end reviews of incidents and says it’s prioritising work at high-risk treatment sites. That may well bring improvement, but the starting line remains a long way from where customers and the environment have every right to expect it to be.
The Environment Agency’s latest completed annual assessment, covering calendar year 2024, awarded Southern Water two stars, meaning it “requires improvement”. The company has mostly been stuck on one or two stars since 2018, apart from no year in that period reaching three or four. Southern Water’s 2025/26 accounts forecast a possible one-star outcome for 2025, but that remains the company’s own expectation rather than the regulator’s final published verdict.
And the legal clouds haven’t blown over.
On 14 July 2026, Southern Water pleaded guilty to two environmental-permit offences concerning pollution of the River Test near Stockbridge. The Environment Agency had discovered a dark plume from the Fullerton wastewater treatment works in March 2023; suspended solids were more than three times the permitted limit and iron levels were also well above the allowed amount. Sentencing will take place later.
The regulator traced the pollution almost four miles upstream. Southern Water’s own site staff said only one of four tanks used to remove sludge and scum was working properly, while another had reportedly been awaiting repair for more than a year. Pumps serving the sand-bed filtration process were also having problems.
Southern Water didn’t alert the Environment Agency when it became aware of the problem or the equipment failures behind it. The company subsequently acknowledged that it had missed at least two opportunities to raise the alarm and that its procedures hadn’t been followed. That isn’t some distant relic from the era of fax machines and Filofaxes; it happened during the turnaround period Southern Water now presents as a clear break with the past.
Southern Water pleaded guilty at Medway Magistrates’ Court in April 2026 to 13 offences arising from sewage discharges at the Margate and Broadstairs wastewater pumping stations between 2019 and 2021. Nine charges concerned untreated sewage dumped off the Kent coast, three involved failures to notify the authorities promptly and within 24 hours, and the final offence concerned the absence of a standby pump at Margate between July 2019 and October 2020. Following a two-day sentencing hearing at Canterbury Crown Court, on Thursday & Friday of last week, Mr Justice Johnson imposed fines totalling £7,127,083. He said: “The harm was not confined to a single event, but arose from a pattern of repeated incidents over several years.” The judge said Southern Water’s 174 previous convictions showed a prolonged history of legal non-compliance and described that record as “an exceptionally serious aggravating factor”
Southern Water’s pollution problems stretch beyond courtrooms and the coast. Dr Iain Goodall told Canterbury councillors that River Stour testing found high faecal contamination and antibiotic-resistant E. coli, warning of “a non-zero risk to river users of potentially contracting a serious infection”. The evidence doesn’t prove Southern Water caused every contaminated sample, but it adds to concerns over sewage discharges and pollution across the Stour catchment.
The old £90 million fine shouldn’t be forgotten either. It was imposed in July 2021 after Southern Water admitted 6,971 unpermitted sewage discharges between 2010 and 2015. It matters as context: this is a company with a long rap sheet, now trying to persuade customers and regulators that the culture, controls and operations have changed.
The 96.7% headline hiding a 54.2% wastewater result
Southern Water’s combined numeric discharge-permit compliance figure was 96.7%.
On the face of it, that sounds pretty respectable — nearly a clean sweep.
It wasn’t.
The headline combines two very different piles of permits. Southern Water had 310 numeric water permits and recorded no failures, giving 100% water compliance. It had just 24 numeric wastewater permits and recorded 11 failures. Wastewater compliance was therefore only 54.2%.
In other words, nearly 46% of the wastewater permits in this measure failed.
The combined 96.7% is mathematically correct because there were 334 permits altogether and 11 failures. But the whopping great stack of 310 fully compliant water permits swamps the much smaller wastewater group, leaving a reassuring headline that masks a dire sewage-treatment result.
Imagine a garage passing 310 checks on its reception desk, tea-making facilities and paperwork, then failing 11 of 24 tests on whether it can repair the brakes. Technically, its overall pass rate might look marvellous. You still wouldn’t hand over the car keys with a spring in your step.
Southern Water says the 11 permit failures occurred across seven wastewater treatment works. It attributes the problems to unusually high nutrient loads during a dry first half of the year, a sludge backlog, tighter phosphorus limits, weak “Operational Grip” and poor visibility over assets controlled by third parties.
Its recovery plan includes daily senior-management compliance calls, more visits to treatment works, improved alarms, reviews of third-party contracts and better access to critical spares. All sensible enough. The awkward question is why basic operational grip, site visibility and working alarms needed such urgent attention in the first place.
This isn’t a side issue tucked away at the edge of Southern Water’s patch. The company supplies drinking water to 2.7 million people and wastewater services to around 4.8 million across Kent, Sussex, Hampshire and the Isle of Wight. The part of the business dealing with sewage is the larger of the two by population served.
Deloitte wouldn’t rely on the controls
Southern Water’s Board says the company has a “mature internal system of control” for performance reporting. The Annual Performance Report also contains a formal Board assurance statement on the accuracy and completeness of the information supplied to Ofwat.
Deloitte’s view of the financial-control environment is rather less cosy.
The auditor found deficiencies involving access to financial systems, the precision of management-review controls and controls over manual journal entries. Because of weaknesses in IT and business-process controls, Deloitte extended its direct testing and conducted the audit while “placing no reliance on controls”.
That sentence needs explaining carefully. Deloitte didn’t conclude that Southern Water’s financial statements were materially false. It carried out more detailed checking of balances and transactions and ultimately issued an unqualified audit opinion, saying the statutory accounts gave a true and fair view.
But the route matters. The auditor didn’t trust the control machinery enough to lean on it, so it walked around the machinery and tested the figures directly. That’s rather different from giving the systems a clean bill of health.
Southern Water might say the Board’s “mature” description was aimed principally at its regulatory and non-financial reporting, while Deloitte’s comments dealt with financial and IT controls. Fair enough, up to a point. Even then, the two statements sit together about as comfortably as a cat and a cold bath.
The Audit Committee says Deloitte identified “no new significant issues”. The word “new” is doing a lot of heavy lifting. A longstanding weakness doesn’t turn into a harmless old friend simply because it has already appeared on the agenda.
Southern Water says remediation work is under way. Customers deserve more than the customary promise that everything is being “progressed”. The company should publish the unresolved deficiencies, the systems affected, the people responsible for fixing them, the original deadlines, any revised dates and whether the repairs have been independently retested.
Jacobs, the independent assurer of selected non-financial performance data, gave an unqualified limited-assurance conclusion. That’s important and it would be unfair to pretend otherwise. Within the areas sampled, Jacobs found the reported data provided a fair and reasonable account.
Its wider findings weren’t exactly a spotless MOT certificate. Jacobs recorded 114 findings, including four rated high risk and 43 rated medium risk. Forty-seven material risks were principally linked to data accuracy, supporting evidence and internal assurance. Current-year submission problems were addressed before final reporting, but a number of medium-risk improvements were carried forward.
Both things can be true. The selected figures can be fairly stated after assurance work, while the process producing them still needs a good rummage under the bonnet.
Too many figures have wandered off on their own
Once Deloitte’s control findings are placed beside the two reports, a pattern emerges. One or two mismatches might be written off as an errant spreadsheet or a proofreading gremlin. Southern Water has rather more than one or two.
The biggest sits on page two of the annual report, where the key highlights tell readers the loss for the financial year was £112.6 million. The audited income statement and regulatory accounts record a statutory loss of £128.351 million. That’s a difference of £15.751 million.
The smaller number isn’t labelled “underlying”, “adjusted” or “regulatory”. It’s described simply as the loss for the financial year. There’s no footnote or nearby bridge showing how the audited £128.351 million supposedly became £112.6 million.
It might be an innocent production error. Perhaps an old draft made it into the final artwork, or somebody pasted in the wrong number and the last pair of eyes missed it. Whatever the cause, putting a loss £15.7 million below the audited result on the report’s shop window is no minor typo buried beside the stationery expenses.
Deloitte’s overall materiality was £20.1 million, while performance materiality was approximately £12.1 million and audit differences above £1 million were to be reported to the Audit Committee. Those thresholds don’t automatically mean the glossy headline constitutes an audited misstatement — the correct figure appears inside the audited accounts — but they show the gap isn’t mere pocket fluff.
The operating profit also has a double. The audited income statement records £304.314 million, rounded elsewhere to £304.2 million. The going-concern narrative says £307.1 million. That’s another £2.8 million which appears to have taken the scenic route.
The critical-accounting-estimates section reports a pension actuarial gain of £51.7 million. The statement of comprehensive income and the detailed pension note give £59.1 million — a £7.4 million difference.
Then there’s the credit rating. The capital-structure section presents Moody’s Class A debt rating as Ba1 with a stable outlook in one place and Baa3 with a negative outlook nearby. Those aren’t two slightly different flavours of the same thing: Baa3 is investment grade and Ba1 sits below it. The regulatory accounts use Ba1 stable, suggesting the Baa3 reference is stale, but Southern Water should confirm the position rather than leaving readers to toss a coin.
Deloitte’s expected-credit-loss passage contains arithmetic which also refuses to behave. The auditor says the £246.8 million provision was made up of £177.5 million relating to customers processed through Southern Water’s statistical model, £70.7 million relating to customers outside it and a £3 million management overlay. Those three figures total £251.2 million, not £246.8 million.
There may be an offset, overlap or adjustment which the paragraph doesn’t describe. If so, it should be spelt out. “Made up of” usually means the bits add up to the whole; it shouldn’t require a séance with Deloitte’s working papers.
Internal sewer flooding is reported as both 389 and 392 incidents. The narrative says 389, while the underlying figures of 337 proactively reported cases and 55 found reactively total 392. This isn’t just a bit of editorial untidiness: internal flooding is a regulated performance measure tied to a £4.2 million penalty.
There are some plain old clangers as well. One part of the Annual Performance Report says Southern Water disconnected more than 140,000 square kilometres of roofs, roads, pavements and car parks from combined sewers. Elsewhere the credible figure is approximately 140,000 square metres. The first number is an area larger than England — an exaggeration by a factor of one million.
No single mismatch proves deliberate misreporting, fraud or cooked books. Deloitte’s audit opinion is unqualified, and Jacobs’ limited-assurance conclusion is also unqualified. The problem is cumulative: conflicting losses, profits, pension gains, ratings, leakage comparators, flooding totals and expected-credit-loss arithmetic don’t sit happily alongside declarations of mature controls, accuracy and transparency.
Southern Water’s pipes may be leaking less. Its reports are still springing drips all over the shop.
“Profit is Vanity, Cash is Sanity!”
That old accounting maxim is a useful place to turn next. Southern Water’s operating performance improved considerably during 2025/26, but profit alone doesn’t tell us whether the company can pay its bills, finance its investment programme or keep going without repeatedly returning to lenders and shareholders. For that, we need to follow the cash.
And, to be fair, there was a proper operational recovery.
Revenue rose from £992.7 million to £1.443 billion, a jump of £450.5 million or 45.4%. Southern Water moved from a £17.4 million operating loss to an operating profit of £304.314 million. Cash generated from operations more than doubled from £271 million to £590 million. Those aren’t imaginary improvements or a few quid found down the back of the sofa.
Southern Water isn’t a shop which suddenly sold 45% more tins of beans, though. Much of the revenue rise came through the regulatory charging system, including higher allowed revenue for the new five-year investment period, inflation and adjustments carried forward from the previous settlement. In ordinary English, customers were charged a good deal more because the regulator allowed Southern Water to collect more for investment and historic corrections.
Then finance came along and scoffed the operating profit.
The statutory accounts record interest income of £36.573 million, interest expense of £340.720 million, another £2.8 million of interest expense and a £138.393 million fair-value loss on financial instruments. Together, the financing burden turned a £304.314 million operating profit into a £139.443 million pre-tax loss.
A deferred-tax credit of £11.092 million reduced the final audited loss to £128.351 million. No current UK corporation tax was charged for the year. That isn’t evidence of unlawful tax avoidance; the company made a statutory loss and the tax line is largely about deferred accounting adjustments.
The cash-flow figures are starker still.
Southern Water produced £590 million from operations but spent £1.1055 billion on assets. Its investment programme therefore exceeded operating cash by £515.5 million before net interest, derivative settlements or debt repayments were considered.
Net interest-related cash outflows reached £777.6 million, including £461 million paid to settle derivatives during refinancing. After operating and investing activity, the regulatory cash-flow statement shows a £1.417 billion deficit before financing.
That’s the loose floorboard in the recovery story. The day-to-day business generated much more cash, but nowhere near enough to cover the investment and financing demands placed upon it.
Southern Water filled the gap by raising £1.9167 billion through new loans, while repaying £715.5 million of old borrowing. Net borrowing therefore increased by £1.2011 billion. It also received £824.7 million of net cash from share issues following £900 million of shareholder investment.
Cash in the bank rose by £601.8 million, but that rise didn’t simply bubble up from better operational performance. Borrow a net £1.2 billion, take another £824.7 million from shareholders and, barring a catastrophe, there ought to be more brass left in the till.
It’s a bit like boasting that your current account is looking flush while keeping the remortgage documents beneath the fruit bowl.
Customers, shareholders and lenders are paying for the recovery
Customers come first.
Southern Water’s average combined household bill was £703. Its own breakdown allocates £189 to paying over time for previous investment and another £163 to financing investment. Together, that’s £352 — a shade over half the average bill — before a further £171 for current capital investment is counted.
That doesn’t mean £352 is profit handed directly to banks and shareholders in a brown envelope. It includes the cost of infrastructure built over many years and regulated financing returns. What it does show is that the cost of raising and repaying capital is woven through the household bill like lettering through a stick of rock.
Some bills rose by as much as 46%. At the same time, Southern Water restructured its contact centres. Chief Executive Lawrence Gosden acknowledges that customers wanted to discuss the bill increases and says restructuring at that point was “in hindsight, the wrong decision.” Fair play for saying it, but customers could have done without the company moving the furniture while they were hammering on the door.
The shareholders are next. Investors put £505 million into the group in November 2025 and another £395 million in March 2026. A further binding £300 million is committed for drawdown by 31 March 2027, mainly through new minority investor Asterion, while Macquarie-managed funds are due to remain the majority owner.
That £900 million injection mattered. It strengthened the balance sheet, reduced immediate refinancing danger and helped the directors and Deloitte conclude that there was no longer a material uncertainty over going concern. None of the proceeds was paid to the former shareholders of the group.
Southern Water paid no ordinary dividend to external shareholders during the year and says none is expected before 2030. That’s relevant and should be reported squarely: the current owners are putting money in, not pulling ordinary dividends out.
The third group is the lenders.
They’ve got an awful lot of skin in the game.
A £7bn debt pile with several different labels
Southern Water’s statutory net debt stood at approximately £7.047 billion at 31 March 2026, up from about £6.703 billion a year earlier. The actual pounds owed increased, even though the company’s headline gearing percentage improved.
The opening highlights give net debt as 67% of Regulatory Capital Value. The regulatory accounts give gearing of 69.974%. Another regulatory return calculation uses average actual gearing of 73.69%.
These figures don’t necessarily contradict each other. They use different definitions of debt, different treatments of derivatives and preference shares, and in one case an annual average rather than the closing position.
Even so, Southern Water should publish one plain-English reconciliation. At present, it’s like asking three estate agents to value the same house while each quietly measures a different set of rooms.
The regulatory net-debt calculation is narrower than the statutory figure. It shows borrowings and preference shares of £7.156 billion, less £1.159 billion of cash and £125 million of deposits, producing regulatory net debt of £5.872 billion and gearing of 69.974%.
Loans routed to Southern Water through its two financing subsidiaries totalled £6.913 billion. The list contains fixed and index-linked instruments with repayment dates running from 2027 to 2056 and rates reaching 7.75%. This isn’t a short-term overdraft to see the company through a sticky month; it’s a debt mountain with foothills stretching decades into the future.
Deloitte nevertheless concluded that Southern Water remained a going concern and identified no material uncertainty. The company had about £2.206 billion of available liquidity through cash, deposits, undrawn bank facilities and a £500 million bond backstop.
Directors say expenditure would have to exceed forecasts by more than £780 million before that liquidity was exhausted, while net debt would need to rise by roughly £1.1 billion to breach the gearing covenant. That’s a meaningful cushion; the company isn’t about to go belly-up next Tuesday.
But it still forecasts pre-financing net cash outflows throughout the going-concern assessment period. Put more plainly, Southern Water expects to remain dependent on fresh or refinanced capital rather than funding everything from the cash generated by running the water and sewage business.
Then there are the derivatives.
Southern Water reported derivative assets of £133.6 million and liabilities of £1.299 billion, giving a net mark-to-market liability of £1.1654 billion. The company says these instruments are designed to match inflation-linked debt with inflation-linked revenue and the Regulatory Capital Value, and argues that the accounting liability doesn’t reflect the expected offsetting effect on future revenues and assets.
That explanation has some commercial sense. The valuation is also extremely volatile. Southern Water’s sensitivity analysis shows that a one-percentage-point increase in inflation could worsen the derivative valuation by about £727.2 million, while interest-rate movements could shift it by hundreds of millions more.
These aren’t necessarily invoices landing tomorrow morning. But £461 million did leave the company in real cash to settle derivatives during the year. The fog can turn into rain, and when it does, it costs proper money.
Flooding: good news outside, bad news inside
External sewer flooding was one of Southern Water’s strongest achievements. Incidents fell from 3,047 to 2,507, beating the Ofwat target of 3,636 and earning an estimated £30.82 million reward. Around 34,000 sewer-level monitors are helping staff spot trouble before it reaches gardens, roads and open spaces.
That’s good news. No ifs, no buts.
The improvement wasn’t shared evenly. Hundreds of properties suffered repeat external flooding, and long-term figures show some households being hit time and again. A falling company-wide total won’t be much consolation when the same foul water comes sloshing back through the gate like an unwanted relative who refuses to take the hint.
Internal flooding deteriorated and produced a £4.2 million penalty. As already noted, Southern Water reports both 389 and 392 incidents. Whichever total turns out to be correct, each represents a home or property affected by one of the most distressing failures a sewerage company can inflict.
Water-supply interruptions, on the other hand, improved dramatically to five minutes and one second per customer, only a second outside the five-minute target and a country mile better than the previous year’s result of more than two hours. Unplanned outage also beat its target, while 78 of Southern Water’s 87 bathing waters were rated excellent, good or sufficient.
The turnaround is therefore neither fairy tale nor fiction. Some services have improved enormously. The trouble is that the gains sit cheek by jowl with sewage failures, poor customer experience and the financial strain needed to fund them.
Southern Water met or outperformed eight of its 20 common operational performance commitments. Across its wider commitment set, 36% met or exceeded target — meaning nearly two-thirds didn’t.
Before the customer-experience measures were finalised, performance rewards and penalties produced a net £7.98 million penalty. Once forecast penalties for C-MeX, D-MeX and BR-MeX are included, the overall hit approaches £29.7 million and will feed into future allowed revenue.
Southern Water finished 16th out of 17 companies on the developer-services measure and admits: “We didn’t get customer service right this year”. For once, the corporate prose and the numbers are reading from the same hymn sheet.
Higher bills brought a bad-debt hangover
The charge for bad and doubtful debts jumped from £24.7 million to £65.3 million, an increase of £40.6 million or roughly 164%.
That shouldn’t come as a bolt from the blue after steep bill increases. Southern Water says customers delayed or reduced payments, although collection improved later in the year. The company is caught in a nasty loop: bills rise to fund investment and finance costs, more households struggle, and the pile of money Southern Water may never collect grows larger.
The expected-credit-loss provision stood at £246.8 million. Some overdue balances had been outstanding for more than four years. Whatever accounting model is placed around them, a fair chunk of that money looks about as likely to arrive as a punctual replacement bus on a wet Sunday.
Southern Water says 193,252 customers receive financial support and advertises a £235 million affordability package running to 2030. The help is real, but the question of who pays for it shouldn’t be buried beneath a heart-warming headline.
The regulatory tables show approximately £40.79 million of social-tariff subsidy during 2025/26, funded through cross-subsidies paid by other customers. Shareholders separately supplied around £1.172 million for debt matching and other affordability measures.
It would be unfair to claim that the entire £235 million package is funded by customers because the reports don’t provide a complete source-by-source breakdown for the full period. It would be equally misleading to leave the impression that the owners are writing the whole cheque. Much of the present support amounts to one group of billpayers helping another.
Southern Water should publish the funding split in plain figures: shareholder cash, customer cross-subsidy, WaterSure reductions, debt write-offs, deferred amounts and income the company no longer expects to collect.
Nearly £250m of costs parked on the balance sheet
Southern Water added £1.1556 billion to property, plant and equipment during the year. Included within those additions were £164.9 million of capitalised overheads and £84.3 million of capitalised interest — £249.2 million altogether, equal to 21.6% of additions.
Capitalisation isn’t inherently bent. Where staff time, borrowing or other overheads are directly attributable to building an asset which will serve customers for years, accounting rules allow those costs to be placed on the balance sheet and charged gradually through depreciation.
It still changes the look of today’s accounts. Charge the full cost immediately and this year’s profit falls; turn it into part of an asset and the expense is spread across the future. The bill hasn’t disappeared. It has been popped in the cupboard for later.
Southern Water’s total employee costs were £217.2 million, of which £105.9 million — almost 49% — was capitalised. The company says those staff costs related directly to constructing or acquiring assets.
Deloitte treated capitalised overheads as a key audit matter and a potential fraud-risk area because management judgement determines which costs qualify. That’s audit terminology identifying where intentional or accidental misstatement could occur; it isn’t an accusation that Southern Water fiddled the books. Deloitte tested projects, invoices and allocation methods and concluded that the estimate was reasonable.
The conclusion deserves to be reported. So does the scale. Customers should be able to see capitalised overheads and interest by major project, rather than being handed two very large totals and told not to fret about what’s inside the parcel.
The company also has £1.2646 billion of contracted capital commitments for property, plant and equipment, plus £9.8 million for intangible assets. Its Havant Thicket arrangement with Portsmouth Water runs until 2100, with fixed payments totalling £2.575 billion over the life of the contract and a present value of £440.9 million.
That may be correctly treated as an executory contract rather than ordinary borrowing. Economically, it’s still a promise to keep paying until most people reading this are long gone and somebody else is clearing out the final cupboard.
Executive rewards, blocked bonuses and an upside-down target
Chief Executive Lawrence Gosden (below left) received total remuneration of approximately £736,400, while Chief Financial Officer Stuart Ledger (below right) received about £483,100. Their base salaries were £518,162 and £400,496 respectively.
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