A Carillion-Amey consortium has bagged more than £750M of work from the Ministry of Defence.
The Defence Infrastructure Organisation named the team for the £626M national housing prime contract as well as the £152M Scotland and Northern Ireland prime contract.
Landmarc Support Services was handed the £322M national training estate prime deal. All three deals will run for five years, with options to be renewed for the same time again.
The contracts provide planned and reactive maintenance, and have the capability to deliver additional professional services, and capital projects up to a value of £3.93M.
Regional prime contracts for the central, south east and south west of England are due to be awarded in June.
Major-general Mark Armstrong, director of service delivery at the DIO, said: “Prime contracts have not only been designed to provide operational capability at all times, but are also flexible enough to adapt to future requirements of the defence front line; allowing for service requirements to be changed in a timely and cost effective way.”