Work No. 22A—U.K.A railway (2,201 metres in length), forming a diversion of the Tilbury Loop Railway westbound line, commencing by a junction with that railway at a point 253 metres east of the junction of Stebbing Way with Wivenhoe Road, passing eastwards under Renwick Road, then south-eastwards and eastwards over the railway in tunnel (Work No. 22), under the new road (Work No. 22H(1)) and terminating by a junction with the Tilbury Loop Railway westbound line at a point 2 metres west of the western end of Dagenham Dock Station platforms;