S2 was never a flyer in RAF service. One of the 3 original GRs used for BAC / BAE flying trials. XX108 stayed in BAE's stable its entire flying career (Mk 106 Engine trials was its last major project before retirement). S3 was also used but was passed onto RAF service not long into the types service. BAE finished with XX109 in the early 80's just as RAFG was starting to go to Tornado and Jag drawdown was started. Was so behind the curve on service mods and with other frames being retired, was taken to Colt and there it became the weapons load trainer and local rob plane for the odd bit. With GR3 XZ367 becoming available, XX109 was retired from maintenance frame use and "Loaned" to The City of Norwich Aviation Museum, where in time the Museum purchased it off the MoD.