>>13396919 [lb]

Regarding It's A Knockout, and it's Royal version, both were presented by Stuart Hall, who was a presenter for BBC North West. Stuart Hall was later convicted of a number of cases of child abuse.

https://en.wikipedia.org/wiki/Stuart_Hall_(presenter)

Stuart Hall released from prison halfway through sentence

Published 16 December 2015

https://www.bbc.co.uk/news/uk-england-manchester-35111521

BBC management 'aware' of Stuart Hall's sex abuse on premises

Published 25 February 2016

https://www.bbc.co.uk/news/uk-england-manchester-35658025