The services group that maintains the London Olympics park is being sold to French energy giant GDF Suez in a move affecting more than 9,000 staff, reports The Guardian.
Engineer Balfour Beatty is selling its facilities management arm, which also helps run power stations, to GDF Suez for £190m to focus on major infrastructure projects.
The business, known as Balfour Beatty WorkPlace, has big contracts in the UK with organisations and companies including the Department for Work and Pensions, Royal Mail, Sainsbury's and the NHS.
It earned operating profits of £21m on revenues of £482m last year and has a 10-year contract to run services and facilities at the 250-acre Queen Elizabeth Olympic Park in east London, home to last year's Games.
It also won a five-year deal from EDF Energy earlier this year to help maintain West Burton B, a new gas power station in Nottinghamshire.
Balfour boss Andrew McNaughton said the sale was an "important step in our evolution as we intensify our focus on infrastructure".
More than 9,000 staff across the UK will transfer to GDF Suez Energy Services and work under its Cofely brand.
Read more of this PA report published by The Guardian.