The UK construction sector has seen major policy shifts and project milestones this week, from long-awaited payment reforms to breakthroughs in nuclear energy and automation. Here’s what site managers and contractors need to know.

Late-Payment Crackdown Rolls Out

New government rules are targeting one of construction’s biggest pain points—late payments.

  • 30‑day invoice verification is now mandatory. 
  • 45‑day payment cap introduced to improve contractor cashflow. 
  • The Civil Engineering Contractors Association (CECA) has welcomed the reforms, saying SMEs will see “real relief” from crippling delays. 

Impact: Subcontractors and smaller firms should review contracts and payment processes immediately to ensure compliance.

Sizewell C Nuclear Project Secured

The £38 billion Sizewell C nuclear plant is officially moving forward.

  • Two reactors will provide 3.2 GW of power—enough for six million homes. 
  • Thousands of jobs and supply chain opportunities are expected well into the 2030s. 

Impact: Major opportunities for civil engineering, site security, and specialist contractors during both build and operational phases.

Robotic Bricklayers Hit UK Sites

Automation is stepping onto the scaffold. Dutch-built robots capable of laying 500 bricks per shift are now being trialled on London sites.

  • Designed to tackle the 25,000-bricklayer shortfall across UK housebuilding. 
  • Part of wider moves to mitigate acute labour shortages. 

Impact: Early adopters may benefit from cost savings and productivity gains but must consider training, integration, and safety measures.

Planning Permits Drop as DIY Market Cools

UK home renovation planning permissions have fallen to a decade low—151,000 applications year-on-year.

  • Material costs up 37% since 2020. 
  • Labour shortages continue to dampen homeowner activity. 

Impact: Residential construction may remain subdued, with knock-on effects for small contractors and suppliers.

Lower Thames Crossing Construction Approved

A £9 billion project to build a new tunnel under the Thames has been approved.

  • Work to start in 2026, running into the 2030s. 
  • Will link Kent and Essex, easing congestion on the Dartford Crossing. 

Impact: One of the UK’s largest infrastructure projects this decade—huge demand for security, logistics, and specialist services.

Biodiversity Net Gain: Growing but Poorly Understood

Mandatory Biodiversity Net Gain (BNG) rules—requiring developments to leave nature better than before—remain poorly understood.

  • Public awareness scores just 3.1/10. 
  • Market potential estimated at £3 billion by 2035. 

Impact: Developers face compliance risks if ecological planning is not prioritised early in project design.

Key Events in UK Construction

  • Blackheath Tunnel Reopens: £10m railway restoration complete, unlocking future Network Rail funds. 
  • Heathrow Third Runway Revived: £21bn expansion plans back on agenda, decision expected autumn 2025. 
  • £725bn Infrastructure Strategy Announced: Long-term commitment to housing, transport, and energy upgrades; new delivery body NISTA formed. 
  • Planning U‑Turn & Environmental Delivery Plans: Developers must submit biodiversity plans upfront, likely affecting project timelines. 
  • Construction PMI: Housing shows recovery; commercial sector remains weak. 

What This Means for Site Managers

  • Cashflow relief is coming—update contracts to comply with new payment terms. 
  • Opportunities abound in mega-projects like Sizewell C and the Lower Thames Crossing. 
  • Prepare for tech shifts: Robotic bricklayers may ease labour gaps but bring new training needs. 

Environmental compliance is no longer optional—embed BNG planning from the outset.