The BBC has revealed the names of eight companies that will join its framework in July in place of Land Securities Trillium.
The new members are QSs Currie & Brown and Cyril Sweett, architects Building Design Partnership and TP Bennett, project managers Dearle & Henderson and Capita Symonds, and engineers Jacobs and Faber Maunsell.
The eight firms will work on small and medium-sized projects, whereas major building projects will remain under the control of Land Securities Trillium.
The industry is likely to regard these appointments as a move towards "safer" commercial firms, in the wake of the corporation's problems on the redevelopment of Broadcasting House.
The BBC was stung after signature architect MacCormac Jamieson Prichard left the corporation's £400m redevelopment of it's central London headquarters. The corporation then signed up commercial practice Sheppard Robson to see the project through.
The structure of the new framework means that the corporation will have a closer relationship with the companies working for it - and greater control over them.
Previously, Land Securities Trillium was responsible for hiring consultants to work under it.
The BBC initially invited 25 companies to tender for the contracts at the end of 2005; 15 of these were shortlisted in February.