Two 4 Squadron's Sabre F.4s, K (unknown airframe number) and F XB989 which arrived on 4 Sqn on Tue 1Feb55 and was passed to 71 Sqn on Tue 30Aug55.   On Tue 8May56 it was declared Category 4 (Rehab) and sent to Westlands.   Therefore this picture was taken sometime between Feb and Aug 55. (Thanks to Tony Pearce.)