Specialist contractors O’Rourke and Swift Structures are understood to be owed £10m and £4m respectively.
The news follows the issuing of two separate writs against client Capital Shopping Centres for unpaid fees on the £280m project by construction manager Bovis. Under the contract for the construction of Braehead, it falls to Bovis to pay subcontractors.
A spokesman for Swift Structures said: “We are working with Bovis Lend Lease on other substantial projects, and intend to sort out our problems amicably, as we have for some years.”
In a prepared statement, O’Rourke said it expected to open negotiations with Bovis and Capital Shopping Centres very soon. The company added that it had a long and successful relationship with Bovis.
Project insiders said both firms were prepared to “take a hit on the project” because of the amount of repeat work both get from Bovis.
A spokesperson for Bovis said: “Bovis doesn’t recognise these figures. If either of these subcontractors provide substantiation for their claims, we will look at it.”
A spokesperson for Capital Shopping Centres said it would dispute any claims on the project.