The contract for the £1.5bn final phase of the high-speed rail link was signed last week by deputy prime minister John Prescott and PPP London & Continental Railways.
Rail Link Engineering, the project management and design department of London & Continental Railways, is a consortium of the PPP's engineering shareholders, including the USA's largest contractor, Bechtel, as well as Arup, Sir William Halcrow and Systra.
The architectural section within Rail Link Engineering is headed by Alastair Lansley, who designed Ashford Eurostar station while at Nick Derbyshire Architects.
Construction will begin on large-scale commercial developments at St Pancras, Stratford and in Kent as the rail link nears completion.
Masterplanners for St Pancras and Stratford are John McAslan & Partners and Arup Associates respectively.
The project is due for completion in 2007.