Geoff, just checked my logbook and found that G-AZYB was the first Bell 47 I flew after leaving the Army, it was on the 11 Jan 73, I also flew G-AYOE, G-AYOF, G-AYOG, G-ATZX, G-ASLR (Bell 47J2). I can't remember which but one of them was a D model with wooden blades, got jack stall avoiding a low flying fighter and needed both hands on the cyclic to recover. All at Twyford Moors Helicopters no doubt JimL will remember them too.