A guardhouse of 20th century date was seen as a structure in RAF/HLA/407 V 78 28-FEB-1942. It was described as 'Main Guard House (Police)' on a plan of RAF Manston dated 7 April 1930 (RAF Museum, Hendon, reference MFC/78/24/0883) and as 'USAF Guard Room' on a mid-20th century plan (RAF Museum, Hendon, reference X004/2380).

It was recorded as an extant building in Next Perspectives APGB Imagery 07-APR-2021. It was mapped as part of the Historic England Isle of Thanet project in 2024. (1-2)

<1> Historic England Archive, 1941-1960, Historic England Archive RAF vertical aerial photographs, RAF/HLA/407 V 78 28-FEB-1942 (Archive). SKE57101.

<2> Next Perspectives, 2003-2021, Next Perspectives APGB orthophotography, Next Perspectives APGB Imagery 07-APR-2021 (Archive). SKE57110.