UK to boost attack submarine fleet following strategic defence review

The expansion builds on a £15 billion (approximately $18.5 billion) investment already committed to the UK’s sovereign nuclear warhead programme, which supports the country’s continuous at-sea deterrent. This dual investment strategy is a central pillar of the government’s “Plan for Change,” designed to ensure the UK remains safe and secure for generations to come.

The increased submarine fleet will drive a transformation in the UK’s defence nuclear industry, sustaining approximately 30,000 highly skilled jobs nationwide. It will also double the number of apprenticeships and graduate roles over the next decade, supporting vital skills development in engineering, shipbuilding, and technical sectors.

The government plans to deliver 30,000 apprenticeships and 14,000 graduate roles during this period, reinforcing the defence sector’s role as a key economic engine.

The SDR, an externally led review set to be published tomorrow, recommends a shift towards “warfighting readiness” to deter growing threats in the Euro-Atlantic region. Among its 62 recommendations, the government is expected to endorse significant enhancements, including stockpiling munitions and ramping up production capacity to respond swiftly to crises.

A major part of the defence boost includes the procurement of up to 7,000 UK-built long-range weapons, creating around 800 new defence jobs and increasing military capabilities. The review also introduces a new CyberEM Command, supported by a £1 billion (around $1.23 billion) investment in digital capabilities, positioning the UK at the forefront of cyber operations.

Further investments will improve the welfare of service personnel and their families, with over £1.5 billion (approximately $1.85 billion) allocated to repair and upgrade armed forces housing.

Defence Secretary John Healey highlighted the importance of these measures: “Our outstanding submariners patrol 24/7 to keep us and our allies safe, but we know that threats are increasing and we must act decisively to face down Russian aggression.”

Currently operating seven Astute Class submarines, the UK will transition to the expanded SSN-AUKUS fleet by the late 2030s. The programme will see increased industrial activity at Barrow and Raynesway, Derby, with new submarines launched approximately every 18 months.

The Strategic Defence Review reflects the government’s commitment to strengthening national security while delivering economic benefits through skilled jobs and apprenticeships across the UK’s defence and nuclear industries.

By Aghakazim Guliyev