The airport estate has been split into four delivery integrator contracts, which will cover mainly assets replacement, in a strategic shift away from major civil engineering projects.
Each package is valued around £250m with the next control period programme of work due to start next month.
A source told the Enquirer that the four firms have beaten a large field of rival bidders, including BAM Nuttall, Carillion, Costain, Laing O’Rourke, Skanska, Vinci and Volker Fitzpatrick.
Heathrow project integrator roles
Balfour Beatty: Projects at Terminal 1, 2 and 4
Mace: Terminals 3 and 5 works
Morgan Sindall: Southern area
Ferrovial: Northern area
The contractors will work with Atkins, Arup and Jacobs, which have secured key roles as key project consultants and cost consultant Turner & Townsend.
Heathrow Airport is due to sign contracts shortly.