Support services and construction firm Interserve has signed a two-year extension to its South East regional prime contract with the Defence Infrastructure Organisation.
The two-year extension is worth £108 million with the former Defence Estates body.
The new contract will now run until 31 March, 2014, in alignment with the start of the Next Generation Estate Contracts.
The firm are responsible for estate management and construction services at 106 locations in London and South East England encompassing over 7,000 buildings and facilities including RAF High Wycombe, RAF Northolt, Sandhurst, Chelsea and St James Palace.
Interserve was originally awarded the £380 million contract for an initial seven-year period in March 2005.