[Jon]

Ant and Dec formats don't tend to get repeated. I'm not sure any of their previous gameshows have aired at all since their original run.

Mainly because their ITV gameshow formats they’ve presented have either been event television where you need to watch every night or at least the end of the series, with limited runs or rubbish or both in the case of Red & Black. I think Limitless Win is probably the only one that work on Challenge.