The watching brief at the Chapel Royal successfully investigated those parts of the site which were to be most affected by the construction work necessary to convert the vaults into a new restaurant. An area immediately to the east of the building for a new entrance had clearly been heavily disturbed in the past, with modern made ground deposits being recorded. Although ground reduction of the interior of the vaults was expected to reveal little of archaeological interest two wells were uncovered. It is likely that both date from the 19th century, and were constructed when the vaults were largely used for storage. 19th-century wine bottle glass and building materials were noted but not retained.