Hello, I'm not sure if this is the right format or section to post this as I've never posted on this forum before so I apologize, but I wanted to call attention to an unaired pilot of the long-running British children's TV show "Rainbow". According to Wikipedia with the now gone official Rainbow website as a source (still available on archive), and screenonline, the Pilot was improvised and unscripted, and featured John Kane as the presenter, Tim Wylton as Rainbow the Bear (later Bungle), the musical band Telltale, and Peter Hawkins as Zippy, Sunshine & Moony. The first episode of the series would later air on October 16th 1972 with major differences to the pilot, such as David Cook replacing Kane as the presenter, John Leeson replacing Wylton as Bungle, and Violet Philpott replacing Hawkins as Sunshine & Moony (although he still voiced Zippy). As far as I can tell, no remnants of this unaired pilot are available except for purely text. However, ITV does seemingly have HD copies of the first and second series of Rainbow, so it is still hopeful that they have a copy of it.
I did find this image online, which afaik features a horrific Bungle costume that afaik was never seen in the show or anywhere else except for this image? (The man in the image does look like Cook and not Kane, which suggests that it's probably not from the pilot, but still must be something unused?)
(This is the infamous Bungle costume that was actually used in the early episodes of Rainbow)