Would this be the Norway incident? Two gazelles from 2Flt AMF
XZ348 and XW843 (same numbers, different order)
https://aviation-safety.net/wikibase/65049
UK Military Aircraft Losses
Did 3 BAS have a similar incident, or has time blurred the facts?
I think the Lynx incident mentioned above, was close to the Ex Snow Queen hut.
https://aviation-safety.net/wikibase/64963