NAO climate risk review: infrastructure reporting lessons for UK engineers
Reviewed by Joe Ashwell

First reported on New Civil Engineer
30 Second Briefing
A new National Audit Office review of 2025–26 departmental annual reports maps how climate change could disrupt UK energy, transport, water and digital infrastructure, focusing on flood, heat and coastal erosion risks. The review assesses whether departments quantify exposure of assets such as rail corridors, trunk roads, substations and water treatment works to extreme rainfall and higher peak temperatures, and how this is reported to Parliament. For engineers, it signals closer scrutiny of asset-level risk data, design allowances and adaptation plans within government-backed infrastructure programmes.
Technical Brief
- Departments are expected to describe climate threats to “essential infrastructure”, not just operational activities or policies.
- Over time, NAO scrutiny is likely to normalise climate-related safety factors and adaptation measures in government-backed designs.
Our Take
The National Audit Office has already been scrutinising climate-exposed mega-projects such as HS2 and Sizewell C in our database, so this new review of climate threat reporting is likely to tighten expectations on how sponsors evidence resilience and value-for-money in future business cases.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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