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    WSP and Mott MacDonald Wylfa SMR deal: permitting and EIA lens for engineers

    February 5, 2026|

    Reviewed by Joe Ashwell

    WSP and Mott MacDonald Wylfa SMR deal: permitting and EIA lens for engineers

    First reported on New Civil Engineer

    30 Second Briefing

    WSP and Mott MacDonald have secured a £25M contract from Great British Energy – Nuclear (GBE‑N) to deliver environmental services and permitting support for the proposed small modular reactor (SMR) development at Wylfa on Anglesey. The consultancies will lead environmental impact assessment, regulatory interface and consents strategy for the multi‑unit SMR site, a former nuclear location with complex coastal, seismic and ecological constraints. Early permitting work will be critical for geotechnical investigations, marine works and long‑lead nuclear island foundations once a reactor technology is selected.

    Technical Brief

    • Similar SMR sites in the UK are likely to adopt combined environmental–permitting frameworks with comparable contract scales.

    Our Take

    WSP’s role at Wylfa adds to a run of large UK and international infrastructure wins in our database, including National Highways’ M5 junction 22A scheme and Melbourne’s SRL East, signalling that its environmental and systems capabilities are being embedded early in complex, regulated projects.

    Anglesey’s Wylfa site sits within the Environmental category where several stories involve contentious permitting and community interfaces, so bringing in WSP and Mott MacDonald at the permitting stage likely reflects a strategy to de‑risk objections around nuclear siting and coastal impacts in the UK planning regime.

    WSP’s recent appointment of a major programme director with a background in the Atomic Weapons Establishment suggests the consultancy is deliberately deepening its nuclear and high‑hazard governance expertise, which will be directly relevant to navigating UK nuclear licensing pathways for the Wylfa SMR programme.

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    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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