South of the transmitter buildings lie a number of ancillary buildings that formed part of the Second World War and post-war Swingate radar station. These include what were probably the probably the Gee-H building of 1950s and 60s date providing a radar/navigation system for Vulcan and Canberra bombers. To its north-east are the footings of its stand-by set-house and fuel catch pit. The southern building is the ‘tropo’ or troposcatter building for Ace High. There are also the foundations for the former troposcatter array. There are two groups of six small rectangular pads with metal fixings which supported the two large billboard reflectors. These were extant as recently as the mid-late 1980s but have since been demolished.