Hi
In February, I applied for my late father's service records, as I am the only surviving member of the family, and I followed all the procedures and form-filling, as designated. As I could remember his service number, and a number of odd clues from childhood, I filled in as much as possible on the forms, sent off a cheque for £30 with a copy of the death certificate, and had an interim letter of acknowledgement, saying the info would probably take about 3 months, which is exactly right. This morning, the copy of my father's service record arrived through the post.
If you are not au fait with the RAF jargon, they enclose a printout of abbreviations used on the record, and you can forward a copy to the Air Historical Branch which can, presumably, transcribe what you can't work out for yourself.
My original application went to RAF Disclosures, Room 6, Trenchard Hall, Royal Air Force, Cranwell, Sleaford, NG34 8HB.
If you are, like me, trying to piece the family jigsaw together, you will find the info useful. Good luck with it!