Plenty of vile individuals in politics, but...
Top six: Osborne (Labour could've authored parts of his budget), Cameron (sleazy salesman vibe), Dianne Abbott (loud, ignorant and rude), Sturgeon (disingenuous), Bennett (clueless), Brown (scum).
I'd have said Miliband and Balls, but they're toast.
As for Clegg, he wasn't that bad.
Blair deserves a mention, as he is an utterly horrible human being, but he's not an MP anymore.
Theresa May, I consider her a revolting authoritarian, and she could trade places with Cameron. She is probably more dangerous in some ways.
Salmond, though I consider him disingenuous, I don't rate as poorly as some of the above.
Iain Duncan Smith doesn't bother me hugely, as he occasionally makes some sense.