I'm sure I served under your father at some point, but sadly I cannot recall where or when.
There's an excellent piece on the Radfan Hunters website here:
Phil Champniss's page which is a transcript of an interview with your father.
I hope that he enjoyed retirement in Menorca - a delightful island (famous for its gin!) which is where my last family home was for many years. Lazing on the beach at Son Bou one day in 1981 in my 63 Sqn RAF Chivenor tee shirt, a chap came up and announced that he'd been on Hunters at Chivenor - but I don't suppose that it was Phil?
Phil wrote the forward to the book
The Perfect Aerodrome: A History of RAF Chivenor by David Watkins in which he says
“RAF Chivenor was the happiest of stations and I know of no-one who didn't thoroughly enjoy their time there. I consider myself fortunate to have served there. I commend this book to anyone who wants to know the complete history of a quite unique RAF station.”
Obviously a fine chap! RIP.