Excavation by P Jones of SCAU and C Green of Archaeoscape of a series of test pits before and after the standing buildings had been demolished, confirmed that the site was prone to flooding and would not have been dry enough for permanent occupation until reclamation of the land at a relatively recent date. No lost or deliberately jettisoned objects of archaeological significance, or offshore riverside features, were recovered; analysis of the environmental evidence from the deep-lying fluvial deposits that were revealed did illustrate that this area of Staines had been a dense pine and birch forest in the Mesolithic period.