GMW worked with architects Wilkinson Eyre, Feilden and Mawson and structural engineer Connell Mott MacDonald on the plan.
The 100 000 m2 masterplan includes: 75 000 m2 of office and hotel space and 6000 m2 of retail space to be built above and around the station; the upgrade of the rail station concourse; relocation of the bus station to Hudson's Place and the redevelopment of the Tube station.
The scheme involves the demolition of a grade II-listed train shed and some listed buildings at the front of the train station.
The scheme will be submitted for detailed consent by the end of 2001.
Westminster's planning committee has proposed to draw up a planning brief to control the impact of the scheme on the surrounding area, including changes to the traffic flow around the station.
The project is scheduled to start on site by autumn 2003.