Official channel for the Defence Nuclear Enterprise, part of the UK Ministry of Defence. We operate, maintain and renew the UK’s nuclear deterrent.

UK
Joined January 2023
The Dreadnought Class will deliver the next generation of our nuclear deterrent. Driving economic growth and supporting tens of thousands of jobs, they'll protect the UK from the most extreme threats to our national security and way of life. Learn more: gov.uk/government/publicatio…
4
1
15
559
The DNE ensures the UK maintains a safe, secure, and reliable warhead stockpile while working on the replacement warhead programme, Astraea. Delivered by @AWE_plc, they've developed, manufactured, and maintained the UK’s nuclear warheads for over 75 years.
4
16
691
Do you want to join an enterprise that supports national security? We're hiring in a range of locations across #TeamDNE. From Barrow to Plymouth, we need dedicated people who are ready to support this national endeavour. Apply: ow.ly/Q8PM50ZUUTn
12
631
A formidable attack submarine, HMS Agamemnon's name carries a historical lineage. Many stories have been written about the previous Agamemnons, and this is where the next chapter begins. Find out more 👇.
2
14
3
63
5,732
One of the most advanced submarines ever built, HMS Agamemnon will play a key role in boosting security in the UK and across @NATO.
5
14
107
3,043
The Submarine Service has come a long way since 1901. It not only keeps our country safe but supports jobs across the UK and showcases the best of British engineering. Here are just some key moments from the last 125 years 👇. 📸: IWM
2
8
32
1,289
Defence Nuclear Enterprise retweeted
🎉 The first-ever National Cadets Week starts now! We're celebrating cadets, recognising the volunteers who support them, and highlighting the positive impact Cadet Forces have in communities across the UK. #NationalCadetsWeek
28
46
9
145
27,479
From the pioneering Holland 1 to today's cutting-edge HMS Agamemnon, the Submarine Service has been at the heart of keeping the UK safe for 125 years. Now, as the sixth Astute Class submarine arrives at HMNB Clyde for the first time, we continue that proud history.
3
11
79
2,208
Defence Nuclear Enterprise retweeted
125 years of the Submarine Service. Today, we celebrate our people. The crews who serve in silence. The families who support them. The veterans who paved the way. And every submariner who as helped shape 125 years of history. ➡️royalnavy.mod.uk/organisatio…
27
125
11
544
30,320
🗓️ #OTD in 1901 the @RoyalNavy's first submarine was launched. 125 years later, Director General Submarines, Sir Chris Gardner and Director Submarine Support, RAdm Martyn Boyes discuss their time in the Submarine Service. Watch the full conversation: ow.ly/7yvx50ZTQUj
3
7
34
3,480
Defence Nuclear Enterprise retweeted
Today we celebrate 125 years of the Submarine Service, a remarkable legacy of service, innovation, courage and commitment. We remember those who served before us, recognise those serving today, and look ahead to the future of the Submarine Service. ➡️royalnavy.mod.uk/organisatio…
10
58
8
265
55,655
For the first time, a @RoyalNavy uncrewed submarine has successfully launched a torpedo during a landmark trial in Scotland, showcasing a pivotal moment for AUKUS and what the UK, Australia and the US can achieve together. Read more: royalnavy.mod.uk/news/2026/s…
5
33
1,126
The Astute Class are the UK's current attack submarines 🇬🇧. Conventionally armed and nuclear-powered, their stealth, endurance, autonomy and reach give the class unparalleled freedom to support worldwide operations.
16
12
6
116
28,980
Defence Nuclear Enterprise retweeted
HMNB Clyde will receive three new floating docks through a UK-only competition. Part of Programme Euston, the new facilities will enable crucial maintenance for the UK’s current and future fleet of nuclear submarines, allowing essential upgrades and repairs to be carried out.
18
39
5
349
58,001
Living up to the nickname 'Awesome Aggie', the sixth Astute Class submarine's capabilities include: 📍 stealthy precision strike 🌊 anti-submarine warfare 🌍 global intelligence gathering
8
14
1
141
11,354
HMS Agamemnon’s departure is a significant moment for #TeamDNE and is a clear demonstration of the engineering and industrial excellence of the Barrow workforce and wider UK supply chain. Hear more from @ChiefDefNuclear, Maddy McTernan CB, who has been in Barrow today 👇.
5
9
2
118
5,078
HMS Agamemnon has sailed from @BAESystemsplc in Barrow and will now begin sea trials 👏. Formidable, and highly capable, her departure showcases the best of British engineering and the dedication of tens of thousands of people across the DNE. Read more: ow.ly/2l3U50ZRnAa
15
40
5
327
42,718
Defence Nuclear supports over 47,000 jobs. With a salary 20% above national average, we offer a premium wage and secure employment across the UK 🇬🇧. From roles in engineering and safety to submarine systems and emergency planning, join #TeamDNE today: civilservicejobs.service.gov…
1
7
1
25
7,644
This week DNE colleagues from across 14 locations came together and collectively rowed 6,724km. Building a sense of community and teamwork across defence, industry, and international partners, this kind of collaboration is key to delivering our national endeavour.
1
6
558