Heli1 has some of it straight but the responses, in part, qualify the benefits of posting the site.
Ferranti Helicopters was a short lived operation but one which made quite an impact on shaping the future of the UKs executive helicopter scene. Prior to being bought out by British Caledonian in 1979 they operated a fleet of pristine Bell 206s, a pair of BO105's and managed at least half a dozen additional aircraft.
Forget, thank you. This was thoughtful. We are already working with the Museum of Science and Industry in Manchester on this project.