Work No. 3B—U.K.A railway (846 metres in length), forming a continuation of the diversion of the Midland Main Line at St. Pancras Station, commencing by a junction with the railway (Work No. 3) at its termination, passing northwards over the Regent’s Canal, under the railways (Works Nos. 1EE, 1GG and 1JJ) on viaduct and the existing bridge carrying the North London Line over the Midland Main Line and terminating by a junction with that railway beneath a point 30 metres north of the southern parapet of the bridge carrying Agar Grove over that railway, including a bridge over the Regent’s Canal;