UFO (TV series)
UFO is a 1970 British science fiction television series about an alien invasion of Earth. It was created by Gerry Anderson and Sylvia Anderson with Reg Hill, and produced by the Andersons and Lew Grade's Century 21 Productions for Grade's ITC Entertainment company.
Anthony Grey
From the 1990s, Grey took an interest in UFOs. He produced a three-part documentary in 1996–1997 for the BBC World Service entitled "UFO's - Fact, Fiction or Fantasy?". His conclusion was that there is overwhelming evidence for visitations to earth by extra-terrestrials.