Apparently a few years ago the HSE (Health & Safety Executive) in the UK tried to get into the Accident Investigation business. Fortunately they were put in their place by the AAIB.
Quite frankly the last thing we in aviation need is interference in our business by 'Elf and Safety. We are regulated quite efficiently by our CAAs and accidents are investigated by AIBs. Individual Aviation companies have enough 'E & S interference - along the lines experienced by other non aviation businesses.
BD