again proposed four long cuts in 1805, each about 1.5 mi, but the Navigation Committee were thwarted by strong opposition from landowners.

Zacchary Allnutt, by then Surveyor for the Second and Third Districts, stretching from Staines to Mapledurham near Reading, suggested locks at Chertsey, Sunbury and Teddington in 1805. Rennie submitted new proposals in 1809 for nine locks between Staines and Twickenham; two would be without weirs, seven would require large weirs to be built. Finally Leach drafted