Many thanks to everyone for all your kind replies – far more than I expected.
I would like to follow up a couple with PMs if that’s OK. I always feel that there is a treasure trove of knowledge on this forum and I am very rarely disappointed.

DH83 – Thanks for the heads up. I believe I might have that actual copy of Aviation News buried up in the attic as I think I had most of them in the early 80s.

Best Regards
Keith