Ivor Gibbs, who had been my Shackleton co-pilot for 3 plus years, became the leader of the 1970 team on the Mk.5.
I have 1974 Red Pelican brochure and Ivor Gibbs is still the leader. I remember it well because that was the year of my one and only JP flight with the late Marcus Edwards who was No 4 in the team.