Do UK media presenters have to prove pro-Union credentials to be hired?

Source::
The National
Do UK media presenters have to prove pro-Union credentials to be hired?

IF, prior to an interview with the PM, Niall Paterson had been heard by Johnson saying he was going to give him a good kicking, he would have been sacked. Therein lies the rot that exists in broadcasting newsrooms across the country when just such a promise was overheard before interviewing the parliamentary leader of the third-largest political party in the UK.

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The National
Do UK media presenters have to prove pro-Union credentials to be hired?