Babcock International Group has signed a £750m infrastructure contract to bring forward future submarine capability at its Devonport site in Plymouth. The investment is set to create and sustain more than 1,000 UK jobs in the South West.

The international defence company has signed a four-year contract with the UK Ministry of Defence’s (MOD) Submarine Delivery Agency, to deliver the infrastructure required to support and sustain the UK’s submarines for decades to come.

As part of the major infrastructure programme underway at the Devonport site, Babcock will implement substantial upgrades to existing infrastructure that will support the future capability of the Royal Navy and the UK’s Defence Nuclear Enterprise.

The contract for the delivery of infrastructure includes a dock, logistics and modern support facilities, and underpins the wider role Babcock plays in sustaining the UK submarine fleet.

The construction programme is one of the largest of its kind and will see a further 1,000 construction roles created as the construction phase of the programme continues to ramp up over the coming year.

Supporting Babcock on 10 Dock are delivery partners Costain and Mott Macdonald, and main works contractor Kier BAM.

Crucial to the UK submarine programme, the contract forms part of the site-wide infrastructure upgrade programme at Devonport.

Defence secretary Grant Shapps said: “Maintaining the infrastructure that supports our world-leading submarine fleet is crucial.

“Delivering on our government’s priority to grow the UK economy, this significant investment will create and sustain more than 1,000 UK jobs in the South West, providing vital improvements to the dockyard that will be critical to ensuring our Royal Navy can continue to protect the UK and our Allies.”

Sir Chris Gardner, chief executive of the Submarine Delivery Agency, added: “Investing in our vital submarine maintenance facilities in the Defence Nuclear Enterprise at Devonport is critical to our National Security. I am delighted to have placed the construction contract with Babcock for the delivery of dock and infrastructure for our Attack Submarine deep maintenance projects later this decade.

“This will ensure we deliver available and capable submarines for the Royal Navy to operate in defence of our nation.”

David Lockwood, Babcock’s chief executive, said: “The work we deliver in sustaining the entirety of the UK’s submarine fleet is critical. This investment will ensure that we are able to continue to deliver the complex maintenance and life-extension programmes we undertake to ensure our Royal Navy can continue to go to sea safely, and able to deliver their important work in protecting our nation.”