The term ‘architectural tile scheme’ covers a very broad church of ceramic decoration found usually on the inside but also frequently on the outside of buildings. Tiles are superficial to the structure of the building, being used to cover walls, floors and sometimes ceilings for both functional and decorative reasons. Neither roof tiles nor faience and terracotta are included under my heading ‘architectural tile scheme’ because even though they may also be functional, decorative and worthy of conservation they are mostly used structurally and therefore in need of additional considerations in conservation to that of non-structural ceramic