Work No. 1GG—U.K.A railway (696 metres in length) commencing by a junction with the railway (Work No. 1EE) at a point 40 metres east of the bridge carrying the North London Line over St. Pancras Way, passing eastwards on viaduct over the diverted Midland Main Line (Work No. 3B), the railways (Works Nos. 1HH and 3C) and the Midland City Line (Thameslink), then continuing on viaduct, passing south-eastwards over the new road (Work No. 5EE) and the railway (Work No. 1FF) and terminating by a junction with the railway (Work No. 1AA) at a point 40 metres west of the bridge carrying York Way over the North London Incline Railway, including the said viaduct;