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    M Group £110M ScottishPower line upgrade: design and outage notes for engineers

    August 8, 2026|

    Reviewed by Tom Sullivan

    M Group £110M ScottishPower line upgrade: design and outage notes for engineers

    First reported on New Civil Engineer

    30 Second Briefing

    M Group has secured a £110M contract from ScottishPower to upgrade a key 400kV overhead transmission line between Glasgow and Edinburgh, a primary corridor in Scotland’s high-voltage network. Works are expected to include tower steelwork refurbishment, conductor and insulator replacement, and foundation strengthening to increase capacity and resilience under higher wind and ice loading. The project will require live-line working strategies and careful outage planning to maintain grid stability on one of the central belt’s main transmission routes.

    Technical Brief

    • Contract value of £110M indicates multi-year programme-scale planning, procurement and resourcing requirements.

    Our Take

    M Group’s ScottishPower transmission upgrade in the central belt of the United Kingdom comes on the back of record 2025/26 results and a swollen order book, signalling that utilities work is becoming a core earnings pillar alongside its airport and civils frameworks.

    Our database shows M Group repeatedly winning long-duration frameworks at London Gatwick; adding a major power transmission contract suggests the business is positioning itself as a go‑to Tier 1 for complex, safety‑critical infrastructure in regulated UK environments.

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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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