Taylor Woodrow is targeting a triumphant return to King's Cross amid claims that its interest in a £77 million Thameslink project has cooled.
The firm, which along with Costain recently finished work on the London Underground western ticket hall at King's Cross, has set its sights on the neighbouring _90 million western concourse package for Network Rail.
It is understood to have made the tender list alongside Carillion, Balfour Beatty, Kier and a Laing O'Rourke/Costain joint venture.
Work includes building a new 8,000 sq m, two-storey, semi-circular concourse between the main train shed and the rear of the adjacent Great Northern Hotel, as well as refurbishing the existing western range buildings running parallel to the most western platform. These will be turned into offices for train operators and other staff.
The concourse will be over three times the size of its predecessor, unifying the station.
Currently the main concourse lies at the southern end of the platforms, but it is poorly
integrated with London Underground and is overcrowded.
There is also a second concourse at the western side of the station, which is used by passengers travelling on local services.
The contract is part of a £400 million programme to transform King's Cross station by 2013. Next year Network Rail will be looking to appoint a contractor for the £18 million revamp of the main train shed roof, as well as a £22 million job to modernise platforms.
Bids are due to be returned in mid-January and work will start in 2008.
Taylor Woodrow is one of four bidders for the rebuilding of nearby Farringdon station under the Thameslink programme but, despite being responsible for pre-construction work at the site under the original Thameslink 2000 project, it is thought it is now prioritising the King's Cross job.
One bidder said: "It's going to be a rather tense Christmas period."