The Dreadnought Class Submarines

The Dreadnought Class Submarines programme is delivering four new nuclear deterrent submarines, each 153.6m long with a submerged displacement of 17,200 tonnes. Delivery Phase 4 (DP4) represents a major step in the programme, taking the first boat, HMS Dreadnought, through sea trials and towards entry into Royal Navy service in the early 2030s. The phase also requires a significant improvement in productivity and innovation across Barrow-in-Furness to support faster, more efficient delivery of increasingly complex construction milestones.

G&T is providing Infrastructure Management services during DP4, supporting the programme as it moves into a critical stage of delivery. Our role is focused on helping strengthen the systems, processes and management approach required to drive sustained productivity improvement and support more efficient programme delivery. By bringing infrastructure and programme expertise to this next phase, we are helping create the conditions for innovation, clearer decision-making and improved coordination as activity intensifies across the submarine construction programme.

DP4 will see HMS Dreadnought complete sea trials and move towards readiness for Royal Navy service, while HMS Valiant reaches sea trials and the third and fourth boats achieve key construction milestones. The phase also supports continued investment and productivity growth in Barrow-in-Furness, strengthening the industrial base behind the UK’s nuclear deterrent. G&T’s Infrastructure Management support is contributing to this wider effort by helping embed more efficient and coordinated ways of working across the programme.