A cut, forming a diversion of the Swanscombe Main Drain south of the sewage disposal works on Swanscombe Marshes, commencing in that drain at a point 60 metres north of the junction of Pilgrims Road with Manor Way (West), passing northwards, then in culvert north-westwards under the new road (Work No. 10J), then northwards and terminating in that drain at the south-western corner of the said sewage works;