Things are the wrong way up.
Lawed McAlpine will have the world know that he is not a paedophile; and Mr Messham would seem to corroborate this by saying that he, Messham, made a mistake.
But McAlpine does not deny that he has been the Treasurer of The Conservative Party.In the light of that it strikes me as odd that he should express any concern about his reputation.
In USA Mr Petraeus resigns because it has been discovered that he's had a sexual relations with someone other than his wife. Sounds highly correct of him.
But he has resigned as Head of CIA. He doesn't apologise for that.