I think they were, Eden resigned as PM over the Suez fiasco.
Edwina Currie resigned over the eggs and salmonella disaster
Robin Cook resigned over Iraq war
Heseltine resigned over the Westland affair.
Mandelson resigned over not declaring a loan in the members interests.
Jeremy Thorpe resigned the leadership of the Liberals over a gay love affair that ended badly and he was charged with conspiracy to murder, acquitted and still resigned.
I think the media was fairer as well, it investigated rather than sensationalised,