Parliament can also impeach ministers. It hasn't bothered trying for about 180 years because a vote of no confidence is simpler, but it hasn't given up the powe

Parliament can also impeach ministers. It hasn't bothered trying for about 180 years because a vote of no confidence is simpler, but it hasn't given up the power (and it's hard to argue that it's somehow fallen into abeyance through lack of use, as there's precedent for a gap of a couple of centuries between impeachments).