I do not get the mindset of ... "he's paid what he owed, why are we going on about it"
Because he tried to dodge paying tax whilst being Chancellor and the top man of HMRC!
People are so passive and ridiculous sometimes. You get an instant £100 fine if your tax isn't paid on the due date. They don't even allow you 24 hours. There is a cut off date and that's it. Miss it, slapped with £100 fine.
Yet we are supposed to think what Zahawi did is OK? My mind is truly boggled.