UK infrastructure projects and construction activity in August 2026

Construction stirs, steel tightens and the grid queue swells as UK infrastructure heads into fourth quarter

The month’s clearest cross-sector signal came from the grid rather than any single project: Ofgem reported on 29 July that contracted electricity demand offers had jumped from 41GW to 125GW in under a year, with at least 80GW of that increase attributed to data centre schemes now queuing for connections alongside renewables and rail electrification work. That squeeze sits alongside a construction sector that is at least no longer falling as fast, a water sector awaiting a regulator ruling worth hundreds of millions to individual companies, and a steel market still working through the consequences of July’s nationalisation and tariff changes.

Steel and materials

Steel trade policy remained the dominant materials story through August, though without major new escalation. The UK’s quota volumes were updated again on 20 August under the regime introduced on 1 July, which cut tariff-free import quotas by 51% and doubled the out-of-quota tariff to 50%; transitional exemptions continue to protect contracts signed before 14 March through to 30 September. BCIS pricing data still points to fabricated structural steel up 13.1% in the twelve months to May, the most recent reading available, with Tata Steel’s £1.25bn electric arc furnace project at Port Talbot continuing on that backdrop. Resin costs held at the levels already reported this year, with AOC’s cumulative unsaturated polyester, vinyl ester and Neoxil increases still standing at up to £550 per tonne since February; no further UK increase was announced in August. Freight ticked up: Drewry’s World Container Index rose 4% in the week to 20 August to $4,526 per 40ft container, driven by Transpacific rates, after easing through much of July. On standards, nothing new moved this month beyond the items already tracked separately by ECL’s standards watch; BS 8214:2026 and the pending BSI Approved Document B amendments remain the items to note ahead of their respective effective dates.

Rail

Network Rail confirmed funding for a full rollout of its U-Cross level crossing warning system across the 96-mile Heart of Wales line between Swansea and Shrewsbury, covering 126 user-worked crossings, with installation due to start in December. On HS2, Balfour Beatty Vinci completed the first phase of the Duddeston Junction Viaduct, the first and longest of five interconnecting viaducts on the approach to Curzon Street station, with the joint venture targeting substantial completion of civils between Old Oak Common and Birmingham by 2029. East Midlands Railway confirmed it will reinstate cancelled Intercity services from the end of August, following the Class 810 Aurora reliability issues that forced the reduced timetable introduced in July. German rail supplier Vossloh completed its £29m acquisition of British LiDAR specialist Cordel on 13 August. On the GRP side, Engineered Composites’ own ENGRail 51mm modular handrail system kept adding to its award haul: after its National Rail Awards and CN Specialists Awards shortlistings reported in July, it has since picked up a Highly Commended in the Innovation Award category at the Wales Business Awards and won Engineering Innovation of the Year at the Borders Business Awards, taking its regional award tally to four since launch and reflecting steady demand for lightweight, corrosion-resistant GRP safety systems on the network. ENGRail has since added a fifth shortlisting, for Innovation in Design at the Composites UK Awards 2026, with winners announced at the Industry Awards Dinner at the National Motorcycle Museum, Birmingham on 4 November. The National Rail Awards result itself is still to come, at the ceremony on 17 September.

Construction

UK construction infrastructure and GRP building components
The construction downturn continued to ease. The S&P Global/CIPS UK Construction PMI rose to 44.7 in July, its highest reading since March, then to 45.5 in August, still below the 50 no-change mark but the slowest rate of contraction in several months. Commercial work was the most resilient sub-sector in July at 46.8, while civil engineering remained the weakest performer at 38.3 and house building fell at its slowest pace since October 2025. The reading confirms a gradual bottoming-out rather than a return to growth, with total new business still declining, albeit at its weakest rate in ten months. The sector’s persistent labour shortage, already put at 206,000 workers by 2030, continues to push contractors toward off-site and lower-labour methods, including GRP components that install without welding or hot works permits.

Water and utilities

Ofwat’s draft decision on the 2026 AMP8 cost change re-opener, due on 15 August, backed a real allowance of around £975m for United Utilities, which has since raised approximately £800m in new equity to help fund its expanded AMP8 investment programme, keeping it on course to invest roughly £2.5bn through the re-opener mechanism. Final determinations across the sector are due on 15 December. This builds on, rather than repeats, the £104bn AMP8 total and Ofwat re-opener timeline already reported in July. GRP remains the material of choice for much of the platform, walkway and fencing work this spending will fund, valued across the sector for its chemical resistance and non-conductivity.

Renewables

Solar farm infrastructure using corrosion-resistant GRP structures

The government granted planning permission on 21 August for Low Carbon’s 400MW Beacon Fen solar farm, adding to the pipeline of large-scale consents reported through the summer. Ofgem’s 29 July connections data, noted above, underlines how much of the grid queue growth is now driven by demand rather than generation, a dynamic renewables developers will be watching closely as it affects how quickly new wind and solar capacity can actually connect. Quarter 1 2026 generation data confirmed renewables’ share of total UK generation at 53.1%, consistent with the record-generation trend already flagged in July. GRP continues to be specified as standard for solar panel frames and mounting structures on schemes like Beacon Fen, prized for corrosion resistance over a 25-year asset life.

Defence

Procurement activity was comparatively quiet after July’s Farnborough Airshow deals and the UK-Netherlands amphibious ships agreement. The Ministry of Defence published a market engagement update on its Segmented Sourcing Strategy, part of the wider procurement reform effort intended to speed up acquisition, and continues to direct significant spend toward the defence estate through its £1.6bn Future Defence Infrastructure Services programme. No new prime contracts or GRP-relevant awards emerged in the window; GRP’s role in defence remains the established one already noted in July, with Norco Composites’ hard-hulled riverine craft for MOD fast raiding and beach landing use continuing in service rather than generating fresh news.

Marine

GRP access platforms and walkways for marine infrastructure

Port infrastructure investment for offshore wind continued to build out rather than break new ground this month. The Port of Blyth’s £100m Battleship Wharf expansion, PD Ports’ Teesport Offshore Gateway proposals and the government-backed Port Talbot floating offshore wind hub are all progressing along the lines already reported in July, with no material new milestones in the past four weeks. All three schemes will need the corrosion-resistant platforms, walkways and fencing that GRP is already established in for marine environments as construction advances.

Data centres

Data centre construction remained the standout demand story of the month. Ofgem’s finding that contracted electricity demand offers rose from 41GW to 125GW in under a year, with at least 80GW attributed to data centres, is the single most significant infrastructure statistic to emerge in August. On the ground, Ada’s 210MW Docklands campus moved into physical construction in the Royal Docks, and Vantage Data Centres’ £284m CWL2 campus at Barry in South Glamorgan began construction over the summer. London’s data centre estate now stands at around 99 sites and 760MW of peak demand, against more than 8GW of additional demand sitting in the connections queue, underlining the scale of the grid challenge set out above. GRP rooftop access systems and walkways continue to gain ground on schemes like these, valued for cutting dead load on roof structures compared with traditional steel access systems.

What to watch next month

Ofwat’s final AMP8 re-opener determinations are due mid-December but expect further company-level statements through September as the draft decision beds in. The National Rail Awards results on 17 September will confirm whether ENGRail’s shortlisting converts to a win. Watch also for any further quota or tariff movement as the transitional steel exemptions run out on 30 September, and for whether the construction PMI can cross back above 50 after two consecutive months of improvement.

RailBusinessDaily, Rail Business UK, Office of Rail and Road, S&P Global/CIPS UK Construction PMI, Bloomberg, Ofwat, United Utilities, Carbon Brief, GOV.UK planning notices, Tussell, MOD procurement notices, Associated British Ports, PD Ports, Port of Blyth, Barbour ABI, Glenigan, Ofgem, CompositesWorld, Composites UK, BCIS, UK Integrated Online Tariff, Drewry World Container Index, National Rail Awards, Wales Business Awards, Borders Business Awards. Defence procurement coverage was thin this month; no major new contract awards were identified beyond routine notices.

Compiled by the Engineered Composites News Desk.