HS2 seeks contractors to hook up stations 1/4 Birimingham Curzon Street, revised design as of Jan 2020 2/4 Old Oak Common station will be 900m long 60m wide 3/4 Euston's High Speed 2 station 4/4 Aerial view of Interchange Station HS2 Ltd has launched a £47M framework covering station building systems for the High Speed 2 (HS2) phase one stations between London and the West Midlands. The framework contract will cover components and systems that will be common to all four stations – London Euston, Old Oak Common, Birmingham Interchange and Birmingham Curzon Street. A Balfour Beatty, Vinci, Systra JV will lead the construction of Old Oak Common, while Euston station construction will be carried out by a joint venture between Mace and Dragados.