Sure but you have to be a bit of an OTT rabble-rouser to get de-selected, it tends to risk a seat, and being a rabble-rouser isn't necessarily a sign of a good MP by a long stretch.
Well Ken Livingstone did fairly well, he's hardly ever been exactly a toe-the-line MP, and Bob Marshall-Andrews is another, both current Labour MPs and very far from party snouts, Diane Abbott, Tony Banks, Robin Cook (he even got into the cabinet). I don't know of any in the Tory or Lib Dems, but they're probably there somewhere. Lots of Labour MPs voted against the Iraq War too, far more in the Labour party than in any other party, they don't all just do as they're told. Their voting records are all available so they're not sneaking around behind their leaders' backs, when they vote against stuff (which happens quite a bit) it's recorded in black and white.