It was not possible to find the precise location of this building though the 'F' designation suggests it is in the high explosives research area within the earthworks of the original fort.
This is part of the Job: 2K/15197 Defence Science & Technology Laboratories, Fort Halstead, Sevenoaks, Kent; within the Volume: AF00254 England's Atomic Age; within the Series: EHC01/157 England's Atomic Age; within the Collection: EHC01 English Heritage(Eh):Archive
© Historic England Archive
Photographer: Kendall, Derek
Mobilization Centre, Fort, Military Building, Research Station