1968 was one year on and the fleet had changed a lot. The One-Elevens had started arriving.
In 1967 the Bristol Freighter was G-AIFS and the last DC3 was G-APPO. Both had gone by the following year. The last Vikings were G-AGRW and G-AHPB, which were deregistered during summer 1968.
The Beverley came later, in 1973, intended to move RB.211 engines round to wherever a Tristar had conked out. With only two aircraft in the fleet it didn't show much confidence in the new engine. For many reasons, including the certification paperwork, it was never got into service of course. It would have been a hoot to see it making it to St. Lucia !