The signing of the contract, which also includes custody suites, comes less than two months after it was appointed preferred bidder.

The build element of the contract has been scaled down from an original price of £216m to £100m in the wake of the Government’s construction efficiency drive.

Interserve and consortium partner Equitix, the infrastructure developer and
fund manager, will each invest £4.3 million in the project.

The divisional head quarters will be located in Leeds and Normanton,
while the training centre will be be built next to the force’s Operational Support Division in Wakefield.

Interserve will provide facilities management services at all the locations for 25 years after completing the construction.

It is anticipated that the Normanton DHQ will be available by the end of 2013,
with the training centre and Leeds DHQ following in the first half of 2014.

The FM element will be worth around £50m over the 25-year period.

A spokesman for West Yorkshire Police Authority said: “At least 85 per cent of subcontracts will be awarded to local companies, and at least 65 per cent of construction staff will live locally.

“Interserve has also made detailed commitments to support skills and training for young people, including a firm commitment to support 85 young people across West Yorkshire to access apprenticeships.”