MOD £26bn UK naval bases upgrade: delivery and risk lens for engineers
Reviewed by Tom Sullivan

First reported on New Civil Engineer
30 Second Briefing
The Ministry of Defence has launched a £26bn, 10-year programme to modernise the Royal Navy’s three principal naval bases, billed as the largest naval infrastructure investment since the Cold War. Works are expected to include major upgrades to quays, dry docks and utilities to support larger surface vessels and nuclear-powered submarines, alongside digitalised asset management and hardened waterfront structures for climate resilience. Civil and geotechnical contractors can anticipate extensive marine piling, ground improvement and complex phasing to keep operational berths and dockyards live throughout construction.
Technical Brief
- Programme value is £26bn over 10 years, giving ~£2.6bn/year of naval infrastructure capex.
- MOD frames it as the largest naval infrastructure investment since the Cold War era.
- Long duration enables multi-phase contracting strategies and framework agreements for marine and heavy civil works.
- Scale suggests sustained demand for specialist marine piling, dock engineering and waterfront geotechnical design teams.
- Digital asset management ambitions point to extensive structural condition monitoring and data integration with operations.
Our Take
The Ministry of Defence appears frequently across our 906‑story Infrastructure corpus as a major client on UK frameworks such as the £3.5bn Construction Professional Services 2 (CPS2) route, so this long‑run naval base programme is likely to be parcelled into multiple framework‑let packages rather than a single mega‑contract.
Ramboll’s recent positioning for defence and national security work, including its CPS2 framework slot and dedicated defence growth lead, suggests consultants with established MOD clearance and estate experience will be well placed to capture early design and assurance roles on the naval base modernisation.
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.


