Yes, he does terribly when he doesn't get to define his own job responsibilities. At those, he frequently needed to fall back on his blueblood heritage.

Where he is now, his job (as he or his backers define it) appears to be to distract the voting public from unpleasant facts. He has proven very, very good at changing the public subject.

He has the complicity of the UK news media, much as W had in the US. The long-term takeover of the media by a tiny handful of right-wing extremists is proceeding smoothly worldwide, with concomittent benefits for their chosen spokesmouths.