BBC One

BBC One is the first and principal television channel of the British Broadcasting Corporation in the United Kingdom, Isle of Man and Channel Islands.

The channel only aired the first season of ThunderCats in the UK from 1987 to 1991. They also aired The Flight of Dragons on April Fools Day 1988. The film was repeated on Saturday 18 May 1991, some day before the final "new" episode of ThunderCats.

ThunderCats - Exodus/An Unholy Alliance, 2 January 1987
"Now on BBC1, we begin a new cartoon series. Good battles against evil in ThunderCats."

The Flight Of Dragons, 1 April 1988
"Back to this afternoon here on One where at 3.10, we have the classic true adventure story of Joy Adamson and Elsa the Lioness, Born Free. But first, we're off to a magical world of wizards and spells, witches and demons in The Flight Of Dragons."