MOLA (Museum of London Archaeology) carried out a programme of historic building recording of Gasholders 119 and 120 at the former Colchester Gasworks, Hythe Quay, Colchester. The gasholders were both above-ground, spiral-guided holders. Gasholder 119 was constructed between 1923 -1938 to store coal gas and was later converted to store natural gas; Gasholder 120 dated to the 1960s and was built to store natural gas. Neither gasholder incorporated elements of earlier structures and both were considered to have minimal heritage significance. Gasholder 120 had been fully dismantled but Gasholder 119 remains extant at the time of reporting.<1>