C Flt 22 Sqn has been at Valley since September 1955 (according to the 22 Sqn Association website). The same website lists A Flt as arriving at Chivenor with their Whirlwinds in Nov 1858...!
202 can't quite match that, having taken over the bases used by 228 Sqn until that unit was renumbered in 1964.
I wonder how long 1 FTS has been at Linton now?