Most of any money wrongly spent on the benefits system is mis-payment by the various departments. All of the money lost to Tax-Avoidance is fraudulent, at it is least morally.
The ToryLibDem sham rag,tag and bobtail government has just agreed a deal with the Swiss Bankers where they will be forced to tax any secret bank accounts held there, who’s owners choose to keep their accounts in Switzerland. All targets will remain un-named. That will probably include a few of the cabinet’s host of multi-millionaires.