 John Rennie had suggested a series of long cuts in 1794, and Truss adopted the same idea.Rennie and William Jessop again proposed four long cuts in 1805, each about , 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.