Is UFO related to SPACE: 1999 or any other Anderson production?
There is certainly nothing onscreen to indicate a direct link between UFO and any other Anderson production. However, there has been a lot of publicity & fan conjecture about a shared “universe” of events in the various Anderson productions. Even in an old issue of STARLOG magazine, there was a Gerry Anderson column with statements saying that Moonbase Alpha was an evolution of the SHADO Moonbase, the Aliens had stopped coming to the Earth around 1990, and that the Hawk fighter was a replacement for the Interceptor. This however was not an official statement, but instead one dreamed up by a STARLOG columnist. However, there are certainly a lot of similarities between UFO and many of the other Anderson productions due to the same group of people working on them. Notable among these are Gerry Anderson & Reg Hill (producers & series concept), Sylvia Anderson (fashions, casting & series concept), Tony Barwick (script editor & writer), Derek Meddings (vehicle design & special effects), Barr