I have a RAF spec Martin Baker mk7a2 rear seat from a Phantom. It has an RAF serial number 260 painted on the seat in a number of places. I have had the seat for about 25 years.
I wonder if anyone would be able to tell me which aircraft this seat is from? After much Internet searching I have drawn a blank.
I haven't got the foggiest I'm afraid, I was MCS, but have you tried the UK Phantom Facebook Group?.