Nutloose is correct. I sat in on the Courts Martial (1979 or 1980?) of RAF Odiham personnel involved in the latter stores thefts, as an "Officer under Instruction". It was not an isolated incident and a number of people were involved. Stuff was being stolen from stores to order. IIRC, a local locksmith contacted the police after he was approached to make copies of certain "controlled" security keys.
The crashed Puma's pilot seat was obtained from a scrapyard near Blackbushe airport and it was spotted being used as a garden swing by a passing RAF engineering officer.