1,023 Potholes Patched in 2024/25 on a Green-Rated Borough
Hillingdon earns GREEN DfT scorecards for condition and spend — yet its own transparency report records 1,023 pothole repairs in 2024/25, up 44% from 2021/22. Eighty-three per cent of the network is unclassified residential roads surveyed every two years, best practice is AMBER, and the council admits data-centre construction traffic is wearing roads faster. Section 58 still turns on your specific defect.
689.6km of Roads — Mostly Residential
Network size from Hillingdon's 2025 transparency report — where pothole claims actually happen
| Asset | Scale |
|---|---|
| Footways | 1,215km |
| Public rights of way | 129km |
| Cycleways | 79km |
| Bridges, culverts and structures | 152 structures (72 bridges, 31 culverts, 49 footbridges) |
| Street lighting columns | ~24,000 |
| Highway gullies | ~33,000 |
"Principal (A) Roads provide access to London Heathrow Airport and key access points in and out of London, notably towards Reading and the west. B & C roads serve as the main links between the A roads and the unclassified (U) Roads that are predominantly residential quieter roads."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
What GREEN Condition Actually Shows
AI-led surveys from 2022 — with B/C and U-roads measured only every two years
Methodology caveat: Hillingdon introduced AI-led condition surveys in 2022, replacing earlier approaches. The council states it is "unable to compare the condition survey results due to differing survey methods" between the 2021 Detailed Visual Inspection and 2023 AI surveys on B/C and U-roads. Survey data also "may not account for changes to the condition of the road, since the survey was taken."
A roads (56.1km) — surveyed annually via TfL BPRN
| Year | Red | Amber | Green |
|---|---|---|---|
| 2022 | 25.2% | 23.4% | 51.4% |
| 2023 | 31.1% | 23.7% | 45.3% |
| 2024 | 29.3% | 25.3% | 45.5% |
Principal roads are predominantly green-rated — 51.4% in 2022 and 45.5% in 2024 under annual AI surveys. But A-roads are only 8% of the carriageway network, and red-condition A-roads peaked at 31.1% in 2023.
B and C roads (73.0km) — surveyed every two years
| Survey | Red | Amber | Green |
|---|---|---|---|
| 2021 (DVI) | 16.5% | 12.3% | 71.2% |
| 2023 (AI) | 5.9% | 18.5% | 75.6% |
B/C roads look stronger under AI surveys — but the council warns the 2021 and 2023 figures use different methodologies and cannot be directly compared.
Unclassified roads (574km) — where most claims start
| Survey | Red | Amber | Green |
|---|---|---|---|
| 2021 (DVI) | 14.2% | 17.6% | 68.2% |
| 2023 (AI) | 13.7% | 28.4% | 57.9% |
Under AI surveys, amber-condition U-roads rose from 17.6% to 28.4% and green-rated U-roads fell from 68.2% to 57.9%. That is roughly 163km of residential network in amber condition at the last AI survey — on roads surveyed only every other year.
"The reported condition of the road network is based on data collected at a specific time. This may not account for changes to the condition of the road, since the survey was taken."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
Following the Money
GREEN spend — but reactive maintenance still accounts for roughly a quarter of highways budgets
| Year | DfT capital (£000s) | Capital spend (£000s) | Revenue spend (£000s) | km resurfaced | Preventative | Reactive |
|---|---|---|---|---|---|---|
| 2025/26 (proj.) | 1,152 | 11,000 | 3,244 | 11.0 | 77% | 23% |
| 2024/25 | 354 | 8,783 | 3,144 | 17.3 | 74% | 26% |
| 2023/24 | 354 | 6,781 | 3,125 | 13.5 | 68% | 32% |
| 2022/23 | — | 4,533 | 3,017 | 13.0 | 60% | 40% |
| 2021/22 | — | 8,996 | 3,083 | 17.3 | 74% | 26% |
| 2020/21 | — | 6,617 | 2,826 | 19.4 | 70% | 30% |
Why spend is GREEN
Capital spend has risen from £4.5m in 2022/23 to a projected £11.0m in 2025/26, while preventative maintenance share climbed from 60% to a projected 77%. The council invests far beyond its DfT capital allocation — a credible asset-management story on paper.
Why claims still happen
Even with 77% preventative spend planned, the council budgets 17% of this year's highways programme for reactive defect response and day-to-day safety work — and expects ~800 pothole patches. Spend volume does not prove every defect was caught within inspection intervals.
Rising Pothole Patch Counts
Estimated potholes filled — defects the council defines as requiring a patch to make the road safe
| Year | Potholes filled | Change vs 2021/22 |
|---|---|---|
| 2021/22 | 713 | Baseline |
| 2022/23 | 844 | +18.4% |
| 2023/24 | 1,021 | +43.1% |
| 2024/25 | 1,023 | +43.6% |
| 2025/26 (projected) | ~800 | Council estimate |
"A pothole is a defect that has been identified on our roads, which requires a patch on the road to make it safe for road users."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
Nearly three patches a day
1,023 pothole repairs in 2024/25 works out to roughly 2.8 patches per day across 689.6km. A green-rated network still producing that volume of safety-critical defects is one where individual potholes routinely form between surveys — especially on U-roads measured every two years.
Inspections, Surveys and Section 58
How Hillingdon says it knows the condition of its network — and where gaps appear
Survey frequency
- • A roads: annual AI-led surveys via TfL BPRN programme
- • B/C and U roads: every two years (next survey in 2025)
- • Structures: general inspections every two years; principal inspections every six years
- • Gullies: annual cleansing regime; high flood/leaf-fall areas more frequently
- • Street lighting: structural testing every five years; electrical testing every six years
Safety inspections
Hillingdon carries out routine safety inspections defined by a network hierarchy considering vehicular and pedestrian volumes, transport hubs, emergency-service access and education facilities. Response times to fix safety-critical defects are set by the same hierarchy.
Annual programmes prioritise schemes using condition surveys, hierarchy, historical defect frequency, accident claims records and resident feedback.
Section 41 vs Section 58
Under Section 41 of the Highways Act 1980, Hillingdon must maintain public highways. The council cites this duty explicitly. To defend a claim under Section 58, it must show a reasonable system for inspecting and repairing the specific defect — not just publish a green DfT scorecard.
- • Was your road on the two-year B/C or U-road survey cycle — and had it been surveyed recently?
- • Did the defect meet intervention criteria during routine safety inspections?
- • Were there prior reports (FixMyStreet, council portal) giving actual notice?
- • Does photographic evidence show defect age beyond the inspection interval?
"We are unable to compare the condition survey results due to differing survey methods, as shown in Figure 3 and Figure 4."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
Planned Work 2025/26
What Hillingdon says it will deliver this financial year
"For this financial year 2025/26, we have confirmed plans to resurface 5 kilometres of our roads, with provisional agreement to resurface an additional 6 kilometres. For our footways, we plan to repair 12 kilometres of our network."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
Coverage maths
Even at the maximum 11km resurfacing programme, Hillingdon would treat roughly 1.6% of its 689.6km carriageway network in a single year. The remaining 98%+ relies on reactive patching, routine inspections and the two-year condition survey cycle to catch deterioration — on a network where U-road amber condition already sits at 28.4%.
What Hillingdon Acknowledges
Verbatim admissions from the 2025 transparency report
On accelerated wear from electric buses
"Electric vehicles are heavier than traditional vehicles, due to the additional weight they carry from their batteries. This additional weight contributes to our roads deteriorating faster, particularly in areas where there is frequent stopping and starting like bus stops."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
On Hayes data centres and construction traffic
"A number of data centres are currently being built across our borough, specifically in Hayes. While they bring positive benefits by supporting technological advancement, they also place additional stress on our roads This is due to utility providers upgrading their infrastructure to meet the needs of the data centres, which sits beneath our roads. This is resulting in more patches and trenches on our roads, affecting the lifespan of our roads. Additionally, increased construction traffic is required to deliver materials to these sites which is also causing our roads to deteriorate faster."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
On statutory duty vs planned works
"We aim to prioritise planned improvements; however, we have a statutory duty under the Highways Act (1980) to keep the highway safe and accessible to the public. This means we will have to respond to defects on our network when they appear."
— Hillingdon Council Local Highways Maintenance Transparency Report 2025
Claiming Against a Green-Rated Borough
Honest assessment: Hillingdon is not Waltham Forest — here is how that changes your approach
What Works In The Council's Favour
- ✓ GREEN condition, spend and overall DfT ratings
- ✓ Capital spend ~10× DfT allocation (£11.0m vs £1.152m projected)
- ✓ 77% preventative spend planned for 2025/26
- ✓ AI-led surveys aligned with TfL BPRN on principal roads
- ✓ Risk-based asset management aligned to Well-Managed Highway Infrastructure code
Expect a well-prepared Section 58 defence. Generic "council neglect" arguments will not land.
What Works In Yours
- ✗ AMBER best-practice scorecard from DfT
- ✗ 574km of U-roads — 83% of network — surveyed every two years
- ✗ U-road amber condition at 28.4% at last AI survey; green U-roads down to 57.9%
- ✗ 1,023 pothole patches in 2024/25 — up 44% since 2021/22
- ✗ Council admits survey snapshots may not reflect current road condition
- ✗ Documented faster deterioration from data-centre construction and electric buses
The Winning Strategy Here Is Specificity
Against a borough with GREEN scorecards and £11m capital budgets, your claim lives or dies on the specific defect:
- • Prior reports of the same pothole — proof of actual notice beyond network surveys
- • Photos showing defect size, depth and age (weathered edges, previous patching)
- • Road class — on a U-road, the two-year survey gap is your strongest structural argument
- • Location near Hayes data-centre corridors or electric bus routes if wear is accelerated
Mac builds exactly this case: prior-report search, photo assessment, and citations from Hillingdon's own transparency data where it helps you — without pretending the council is failing overall.
Hit a Pothole in Hillingdon?
A green-rated borough demands a precise claim. £35 for a professional claim pack.
DIY Claim
- • Submit photos and invoices
- • Use generic template letter
- • No two-year U-road survey-gap argument
- • No prior-report search
- • No Hayes corridor wear analysis
Professional Claim Pack
- ✅ U-road amber deterioration documented
- ✅ Two-year survey cycle argued
- ✅ 1,023 pothole repairs in 2024/25 cited
- ✅ Prior reports searched and attached
- ✅ Section 58 rebuttal tailored to Hillingdon
No percentage fees. You keep 100% of any compensation.
Frequently Asked Questions
Does Hillingdon's GREEN DfT rating mean I cannot claim?
No. GREEN means Hillingdon performs above average on network-level condition, spend and much of its maintenance programme — but Section 58 turns on whether the specific defect that damaged your vehicle was reasonably inspected and repaired. Their own report admits survey data may not reflect current condition, B and C roads and unclassified roads are surveyed only every two years, and they still expect to patch around 800 potholes in 2025/26.
What if my pothole was on a residential or unclassified road?
Unclassified roads make up 574km — 83% of Hillingdon's 689.6km carriageway network. These roads are surveyed every two years using AI-led software (with a Detailed Visual Inspection in 2021). At the 2023 survey, 28.4% of U-roads were in amber condition and green-rated roads had fallen to 57.9%. If your incident fell between surveys, the council's own data may not have captured the defect at network level.
Why is best practice rated AMBER when everything else is GREEN?
The DfT best-practice scorecard is separate from condition and spend. Hillingdon's transparency report shows general bridge inspections every two years, B/C and U-road condition surveys every two years, and a methodology change in 2022 when AI surveys replaced earlier approaches. The council itself states it is "unable to compare" condition results across differing survey methods — which is exactly the kind of gap a specific, evidence-led claim can exploit.
Hillingdon spends nearly ten times its DfT capital allocation — does that block my claim?
Not automatically. Projected 2025/26 capital spend is £11.0m against a DfT allocation of £1.152m — a GREEN spend scorecard. But aggregate investment does not prove the individual pothole was known and repaired within inspection intervals. Prior reports, photos showing defect age, and the road's place in the council's two-year survey cycle matter more than the headline budget.
Pothole repairs rose from 713 to 1,023 in four years — does that help my case?
It can. Hillingdon filled 713 potholes in 2021/22 and 1,023 in 2024/25 — a 44% rise while DfT rates condition GREEN. That pattern shows defects still form faster than preventative resurfacing prevents them. The council defines a pothole as a defect requiring a patch to make the road safe — so these figures are evidence of ongoing reactive workload, not proof your specific defect was unavoidable.
Does the council's admission about data centres and electric buses strengthen a claim?
Potentially, if your incident is on an affected route. Hillingdon's report states electric buses and increased construction traffic for Hayes data centres are causing roads to deteriorate faster, with more patches and trenches affecting lifespan. That is documented knowledge of elevated wear — which raises what a "reasonable" inspection and maintenance regime looks like on those corridors under Section 58.
Data sources: Department for Transport — Local Road Maintenance Ratings 2025 to 2026 | Hillingdon Council Local Highways Maintenance Transparency Report (June 2025). Contains public sector information licensed under the Open Government Licence v3.0.