I worked on flight test analysis on the Sea Vixen Drone program after they left FAA service in 1972 - this was the D Mk3 conversion carried out by Flight Refueling Ltd from 74 to 84. Happy to share some of those experiences if also of interest - is an often forgotten swansong in the life of the Sea Vixen. Have some piccies too of the planes when in the care of FR at Bournemouth Airport in the late 70s / early 80s