Airlink (helicopter shuttle service)
 Airlink was the brand name of a helicopter shuttle service which ran between London's two main airports Gatwick and Heathrow between 1978 and 1986. Operated jointly by British Caledonian Airways and British Airways Helicopters using a Sikorsky S-61 owned by the British Airports Authority the curious and unique operation connected the rapidly growing airports in the years before the M25 motorway existed.