Submarine Delivery Agency

The scale and range of our work represent some of the most complex and technologically advanced programmes the UK has ever undertaken 🇬🇧. Join the SDA and play your part in keeping the nation secure. Apply today: ow.ly/Y2Gk50Wn1s1

The UK Armed Forces dedicate their lives to protecting our nation 🇬🇧. We work every day to deliver capabilities to the @RoyalNavy that are essential to the Continuous at Sea Deterrent. Thank you to those currently serving, veterans, cadets and the families of our armed forces.

Utterly. Brilliant. Boats. The Trafalgar class of hunter-killer submarines passed into history with the decommissioning of HMS Triumph in @HMNBDevonport, the last of 7 T boats which have patrolled beneath the waves for more than four decades. 🔗royalnavy.mod.uk/news/2025/july…

The Astute Class are quieter than any of their predecessors. They operate covertly and remain undetected, despite being larger than the Trafalgar Class submarines. #FactFriday

🇬🇧 UK ballistic missile submarines past, present and future. #ThrowbackThursday

HM The Queen was today appointed Vice Admiral of the United Kingdom when she visited the submarine she sponsors, HMS Astute, in @HMNBDevonport. She met crew and families, thanking both for their stoicism and commitment to the safety of the UK. royalnavy.mod.uk/news/2025/july…

How do we support UK security? 🇬🇧 We lead the design and construction of UK submarines 🌊 We deliver capabilities to the Royal Navy that are essential to the Continuous At Sea Deterrent 🚀 We retain and develop the submarine technology base Read more: ow.ly/fa5c50Wp7sI

Are you studying a STEM subject at uni? 🚀 Apply for the Defence STEM undergraduate sponsorship scheme, those accepted could receive: ✅ Paid tuition fees up to £9,535 per year ✅ A £5,000 bursary per year ✅ 45-day paid summer work placements Apply: ow.ly/KagT50Wp3fG

The Holland class were the first submarines built for the UK Royal Navy 🇬🇧. HMS Holland was launched in secret in 1901. Over 120 years later the SDA is responsible for delivering available and capable submarines for the Royal Navy in defence of our Nation. #FactFriday

The first chapter of HMS Astute's career has been full of firsts. 🇦🇺First A-boat to visit Australia 🌊First A-boat through the Suez Canal 🇺🇸First A-boat to visit the USA Last week HMS Astute arrived in Devonport to undergo a mid-life revamp. Read more: ow.ly/HKOh50WmpIa

Another step forward for the Dreadnought programme as a key unit made its journey to @BAES_Maritime Devonshire Dock Hall 👏👏. 📸 : BAE Systems

The Royal Navy P2000 Patrol Vessel HMS Dasher is pictured escorting nuclear submarine HMS Vanguard to her berth at HMNB Clyde, following a patrol in 2010.

Did you know the Astute Class are the first to utilise high specification video technology to scan the horizon? Find out more about the class: ow.ly/xABZ50WgMcx

Submarine dismantling is an innovative project that will enable around 90% of the submarine’s structure and components to be reused or recycled. Have a look at some of the progress 👇. #FactFriday

HMS Astute sailing up the Clyde estuary into Faslane, for the first time in 2009. #ThrowbackThursday

Today we say thank you to our reservists - people who serve in the Armed Forces alongside a civilian job. Today @AlistairCarns welcomed reservists to 10 Downing Street to celebrate their continued dedication and vital contribution to the Armed Forces. #ArmedForcesWeek

This month SDA CEO Sir Chris Gardner and @ChiefDefNuclear Maddy McTernan, hosted Admiral Bill Houston, Director of Naval Reactors. Admiral Houston who leads the US Naval Nuclear Propulsion Program visited sites critical to the UK Naval Nuclear Propulsion Programme. @USNavyNNPP

Approximately how much of Swiftsure’s structure and components will be reused or recycled?