The association claims that King Sturge, the auctioneer acting for Thames Water, is offering potential buyers an architect's sketch showing up to 50 homes on the site. The council describes the area, which is due to be auctioned in October, as an "allotments site". The allotment holders say Thames Water, which is owned by Australian investment bank Macquarie and is under pressure to maximise its assets, has prevented wider use of the site by limiting the number of plots.