Hello Emma,
I can't say I knew your father well, but I did work with him very briefly when he was with Bristow at Sunderland in 1966, yes, 1966. He was flying the Wessex on an offshore suport contract. Some of the other crew there at that time were Tony English, Larry Coram, John French, John Hooper, George Siddle (famous for cycling everywhere he needed to go) and a couple of Danish engineers who I can't put names to at the moment.
The context in which I remember your father was a discussion regarding the early Decca Navigator equipment on the Wessex, if I remenber correctly it was one of theose silly 'yes you can, no you can't' discussions.
The crash in which he died become a turning point in the developement of the particular helicopter type and lead to a major redesign of the main transmission. I understand the legal ramnifcations went on for quite some time.