Archaeological recording and a test-pit evaluation (four 1m x 1m test pits) was carried out inside the East of England Co-op, High Street, Dedham in April/May 2018 in advance of repairs and alterations to the building (including lowering of internal floors) following a ram raid (and destruction of the frontage) in December 2017.<1> The investigations revealed a probable hearth (a large feature containing patches of charcoal and burning F3 in TP2) likely associated with an earlier medieval hall (or possibly the early 16th century building) as well as probable floor layers L2 and L3; a mid to late 18th-century courtyard to the rear of the hall, constructed of brick paviors, which was built over in the mid 19th century; and a mid 19th-century tiled-floor forming part of an extension to the rear of the property. The evaluation produced finds of prehistoric (Bronze Age or Iron Age), medieval, post-medieval and modern date. The earliest dated finds were from from L3 (interpreted as a medieval or early post-medieval floor) in TP1 and comprised two sherds (222g) of handmade prehistoric pottery, broadly dated mid-late 2nd millennium-1st millennium BC, and a single secondary flint flake. There were a few residual sherds of medieval pottery from pit F4 in TP3; overall the date of the pottery from TP3 broadly spanned the 13th to 16th centuries, although the two most closely datable were of 15th- to early 16th-century date. A quantity of peg-tile from pit F3 in TP2 was not closely dated other than as medieval to post-medieval/modern (probably post 14th century). Also of interest were a few pieces of fossiliferous stone from L6 in TP3, possibly incorporated in a surface or part of a slab used as a threshold.