Channel Tunnel Rail Link section 2: St Pancras Thameslink station

Section 2 of the Channel Tunnel Rail Link – now known as High Speed 1 – included the construction of a new station for the existing Thameslink rail service under St Pancras International station. This paper describes the construction of the Thameslink box on the route of the existing tunnel along with a direct passenger interchange with the new international station. Two new tunnels were also constructed forming a potential connection to the existing East Coast main-line route.