Britain, along with the US and Australia, will join forces to develop underwater drones as part of the Aukus defence pact.
Announced earlier today, a joint statement from the three nations confirmed the scheme will boost each country's strike capabilities.
It added it would also "bolster superiority in anti-submarine and anti-surface warfare, mine countermeasures, electronic warfare, and contested littoral manoeuvre".
The statement announced the plan to curate the latest defence technology, from quantum computing to undersea, hypersonic, artificial intelligence and cyber technology.
"This will rapidly give our forces the very most advanced battlefield technologies as together we produce a range of cutting-edge sensors and weapons systems for undersea drones," UK Defence Secretary John Healey said.
"For too long in Aukus, we talked too much and delivered too little," he added.
"That has now changed under our three governments, and as President Trump has said, we are now full steam ahead on Aukus."
The Labour minister said the undersea vehicles will boost each country's abilities to respond to international threats which target underwater cables and pipelines.
John Healey, along with Australian and US officials, announced the pact today
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Speaking in Singapore, the US Secretary of War Pete Hegseth said: "We are accelerating delivery of advanced capabilities to our war fighters, and together today we are pleased to announce the first AUKUS 'Pillar Two' signature project focused on fielding advanced uncrewed undersea vehicles, or UUVs.
"The signature project will deliver a suite of highly adaptable multi-mission UUV payloads designed to support undersea operations and maintain our collective advantage in the maritime domain."
The Western alliance was formed back in 2021 in a bid to fight back against the rise of China across the Indo-Pacific region.
But Beijing has hit out at the latest united front and branded the Aukus pact "dangerous" and subsequently warned the move could trigger a regional arms race.
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The three nations have been tied together by a united pact since 2021
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China warned the Aukus's "dangerous" pact could spur a regional arms race.
The trilateral security partnership's bid to boost each nation's military capability through the use of nuclear submarines was known as "Pillar One" of the agreement.
The trio's attempt to develop advanced technologies has made up "Pillar Two".
Last year, the US ordered a review of the alliance which raised concerns Donald Trump could be eyeing up pulling out of the treaty.
However, once the American President voiced his commitment for the pact, the UK and Australia relaxed.
Mr Hegseth said today: "The United States, as we've said from the beginning, and we think the review we undertook only strengthened this partnership, remains committed to the Aukus partnership."
He added the alliance was "moving as quickly as possible to enhance our combined submarine presence in the Pacific region".
Australian Deputy Prime Minister Richard Marles added: "This is the three countries putting real capability that we will put into the hands of the warfighter next year, and we are enormously pleased that we have been able to reach an agreement."