House of Commons Speaker John Bercow is supposed to be neutral but has a car sticker saying 'boll*** to Brexit' (he claimed it was his wife's car) and blatantly helping anti-Brexit MPs.
He has already hinted that he may rule on the vexed question of whether the Government can re-run essentially the same motion multiple times in one session. Seems a lot of people are banking on him deciding that they can't - which could kill off Brexit.