H.A. Marks Ltd was employed as Principal Contractor to deliver this project, a key and vital element of which was liaison with Network Rail.
The South West Main Line (SWML) from Waterloo through Earlsfield to Woking and beyond is one of the busiest railway lines in the country.
It consists of 4 tracks all the way from Woking to Waterloo, with services from Earlsfield on the two slow lines.
