Work No. 1BB—U.K.A railway (2,182 metres in length) commencing by a junction with the railway (Work No. 1B) at its termination, passing northwards over the Regent’s Canal and the railway (Work No. 2) in tunnel, then passing north-eastwards in tunnel beneath the railway (Work No. 1CC) for a distance of 150 metres, then over the diverted York Way (Work No. 5Q), the railways (Works Nos. 2AA and 2BB) in tunnel and the East Coast Main Line to a tunnel portal 65 metres to the east of that railway, then passing in tunnel over the Piccadilly Line then beneath Caledonian Road, Westbourne Road and Liverpool Road and terminating at Highbury Corner beneath the junction of that road with Highbury Place, including bridges over the Regent’s Canal, Work No. 5Q and the East Coast Main Line;