The Database of Winterers was originally compiled by Keith Holmes, mainly from publicly available information held by the BAS Archives Service, with corrections from fellow FIDs. The database records the names, occupation, year and base of over 2500 men and women who have spent at least one winter South at British Antarctic bases from 1944 to 2020 – a total of over 4000 Fid-years. For the purposes of the database, the men who wintered at Halley Bay (HB) in 1956, ’57, and ’58 , when it was a Royal Society base rather than a FIDS one, are deemd to be Fids.