I suggest you get hold of his service papers from the Public Record Office in Kew, London. If you are unable to go there yourself, I can put you in touch with a professional researcher.
These should specify the squadrons he served with and then you can refer to the specific squadron records.
Thanks guys,
I've got copies of his Certificate of Transfer to Reserves and Certificate of Discharge. Their info is very limited, though. Can I contact Public Records Office thru EMAIL or post?
Thanks,
Steve