Prior to becoming 664 Sqn, the Para regiments had their own flights. They were amalgamated into 21 Flight before my posting to them in 1969. Aircraft then were 6 Sioux AH1 and 6 Scout AH1. There were a couple of Scouts with XP tail nos (890/ 891 ?). All had the Pegasus decal on forward doors. The all-metal tail rotor blades replaced the earlier wooden bladed items in or about 1970. In'69 all our Scouts had the fully bulged rear doors to seat 4 rear pax.
The Link 2 photo (Sid's)
Makarios Iii In Nicosia, Cyprus On February 21, 1964: Makarios and... News Photo | Getty Images definitely shows XP889.
The rear doors are the earlier version with the small bulge low to accommodate the casualty litter handles (Wasps never had the big-bulge doors due to fitment of the flotation gear fitment).
I suspect that the Scout in photos (Links1 & 2 above) were taken during either an emergency detachment or an exercise that happened to be at the right time; the S/Sgt pilot isn't wearing Cyprus theatre uniform