DavidCg - I left Bristow in 1979, when Iran went pear-shaped, and a little time later I received a letter (sorry, can't remember from who) telling me that my Bristow Pension account had been transferred to Prudential. The Prudential corresponding office was, and still is, at Lancing in Sussex. I receive my pension tax-free as I'm not resident in the UK. It might be worth dropping Prudential a line:
Prudential
Lancing
BN15 8GB
UK
Ms. Tracy Harris
Customer Service Director
By the way, about 15 years ago I received a (surprise) letter from the National Insurance Board of Trinidad and Tobago telling me that I had an outstanding balance in my pension fund and how would I like to receive it, in installments or a lump sum? This time I took the lump sum, I did two years in Trinidad with Bristow and this was the first indication I had about a pension there. Thank you Trinidad!