Summarised from reprot:

On the north face of the Heights, some 500m north-east of the North Entrance on the south side of the North Military Road, is a reinforced-concrete walled compound let into the hillside. The compound contains a pair of reinforced-concrete buildings used during the Second World War by the 7th Coastal Defence Maintenance Unit (7 CDMU) of the Royal Electrical and Mechanical Engineers (REME) as an instrument workshop and separate living accommodation. The unit personnel, based mainly at the nearby Ordnance Store on St John’s Road, were concerned with the maintenance of the optical instruments used for aiming and calibrating the coast artillery weapons emplaced around Dover.

The living accommodation which is located to the south west of the workshop, comprises a five by one bay flat-roofed, single storey building of similar concrete construction to the instrument workshop. This is identified in the 7CDMUunit history as living accommodation for a permanent storeman/guard and two REME tradesmen who were on stand-by in case of an emergency during the night. The building has two doorways closed by steel doors similar to that leading to the emergency generator room. The eastern doorway leads into the REME accommodation, a simple room lit by two windows with steel casement frames. The west door leads to the Storeman’s room; it has a single window. (1)

<1> RCHME, 2001, The Western Heights, Dover, Kent. Report No 10: Miscellaneous Structures 1850-1945 (Unpublished document). SKE17506.