Paragraph Work No. 2D

A railway (240 metres in length), forming cross-overs between the northbound and southbound rails of the City Widened Lines (Thameslink) partly within the Clerkenwell No. 3 Tunnel, commencing by a junction with that railway in tunnel beneath the junction of Frederick Street with the Kings Cross Road, passing north-westwards beneath Acton Street, Swinton Street, Wicklow Street and Britannia Street and terminating by a junction with that railway at a point 10 metres south-east of the bridge carrying Leeke Street over that railway;