A railway (12,300 metres in length) commencing by a junction with the railway (Work No. 16) at its termination, passing south-eastwards on the northern side of the Ashford and Folkestone Railway, under Bad Munstereifel Road (Work No. 17A) and Highfield Lane (Work No. 17C), over Blind Lane (Work No. 17D), then in tunnel beneath Church Road, Mersham for a distance of 160 metres, then passing eastwards, under Station Road, Smeeth (Work No. 17H), over Church Lane, Sellindge, (Work No. 17K), then on the southern side of the Sellindge Converter Station, under Harringe Lane (Work No. 17L), over the A20 (Ashford Road) at Sellindge (Work No. 17M) and the East Stour River west of Stone Street, Westenhanger, under the B2068 Link Road (Work No. 17P) and the A20 (Ashford Road) (Work No. 17Q) to a point alongside the western portal of the tunnel on the Ashford and Folkestone Railway beneath the access to Sandling Park, then in tunnel for a distance of 90 metres beneath that access and terminating at a point 427 metres east of the eastern portal of that tunnel at the access to Sandling Park, including bridges over Works Nos. 17D, 17K and 17M;