Sugar was a politician Neil a political presenter and I would expect them to make political comments, Lineker is a football presenter and pundit and expect him to make comments on the footy, sure Kier will be on the phone soon offering him a job or candidacy.
They are ALL BBC staff and bound to impartiality. Political figures on the BBC should be more stringent, because we get the news agenda from them. I am not saying they have broken such, but to place more weight on those who don’t have the same influence is daft.