"MoD Boscombe Down (ICAO: EGDM) is the home of a military aircraft testing site, on the southeastern outskirts of the town of Amesbury, Wiltshire, England. The site is managed by QinetiQ, the private defence company created as part of the breakup of the Defence Evaluation and Research Agency (DERA) in 2001 by the UK Ministry of Defence (MoD)."

It also seems to be linked to a part of the UK military aware of at least some supernatural/super-science situations, they seriously talked about "gray goo" (see Season_Six#2022-09-19) when Captain Williams contacted a Major working at the site to warn him about The Bincident.

See also wiki: MoD Boscombe Down