Test excavation some years previously by R Masefield of a possible RB tile production site located a large pit feature filled with 550 fragments of RB tile. They included much waster material represented by partially fired, overfired and distorted material, and a range of tile types, including roof, flue and hypocaust tiles. Fabric analysis by I Betts at the Museum of London demonstrated that the Reigate tilery had been supplying tiles to major sites in London. (282; see report in SyAC 90, 247-259)