Not sure if this helps, but those details vaguely remind me of something I used to watch. Maybe try looking into shows that aired in the 'Telly Tots' block aside from CITV? That might narrow down the search.

That's a new one to me, but I'd suggest checking out some old TV forums and maybe even reaching out to the BBC archives directly? Long shot but who knows, might get lucky and find someone who remembers it or a clue to dig further.