A joint venture between Engie and Serco, known as Vivo, bagged the bulk of the work, picking up both the central region including Wales worth £558m; and south west region worth £336m over seven years.
Vinci’s FM operation secured the £423m south east regional deal and Mitie a £160m deal for facilities across Scotland and Northern Ireland.
The core services include planned and reactive maintenance, as well as mandatory safety checks.
The potential additional project work will range from small scale asset replacement and property refurbishments to large construction projects.
Following a six-month mobilisation phase, the core work is scheduled to start in February 2022, with additional project work to ramp up during the course of 2022.
Forming part of the first phase of the Future Defence Infrastructure Services programme, the contracts cover 31,000 units and will support facilities at more than 400 defence sites across the UK, including RAF Lossiemouth, Catterick, Andover, and Britannia Royal Naval College.
As part of FDIS, these are the first of 10 contacts that will be awarded between now and 2022.
The later phases of the FDIS programme will see further contracts awarded for Accommodation Services and the management and maintenance of the UK Defence Training Estate.