Work No. 1EE—U.K.A railway (767 metres in length) commencing by a junction with the railway (Work No. 1AA) at a point on the existing bridge over the Regent’s Canal, passing northwards over the Midland City Line (Thameslink) in tunnel, then north-westwards and westwards, then on viaduct over the Midland City Line (Thameslink), the diverted Midland Main Line (Work No. 3B) and the railways (Works Nos. 1HH and 3C) and terminating by a junction with the North London Line at a point 15 metres east of the bridge carrying that railway over St Pancras Way, including the said viaduct;