[cable]

A lot of ITV's primetime entertainment could be re-formatted for kids. The Chase, Saturday Night Takeaway, one of the numerous Harry Hill panel shows, Tipping Point... hell, I'm pretty certain The Voice Kids and Ninja Warrior UK actually did air on CITV for their first few series.

I don't think Voice Kids or Ninja Warrior appeared on CITV Channel, the latter had a lot of repeats at all hours of the day and night (and network) - there are a few Ninja Warrior style "shows" on YouTube (America seems quite good at this sort of thing), and the other obvious example of a so-called "junior version" of a prime time show was Gladiators back in the 90s, and of course Crystal Maze via the Christmas specials.

Wipeout did air on CBBC, I can't remember if Hole in the Wall did as well. Train2Win and Crystal Maze are from the block era pre kids TV channels being a thing but you never really saw crossovers with the main channels shows even when they did, the only one I recall was CBBC does Fame Academy and That one time with Text. Santa on CITV