The Wessex mentioned was lost off Cyprus. Limassol Bay in fact
Those who died were: Flt Lt Fiona Johnstone PMRAFNS, Master Aircrew Peter Barwell AFC and Cpl Martin Cook PMRAFNS.
I believe the last fatal RAF helicopter accident in Hong Kong might have been Whirlwind XR477, which struck cables near Fanling. Flt Lt Ernest Roy Taylor and F/Sgt James Lucas were killed. However, I could be wrong as I have not checked thoroughly.
Old Duffer