BOURNEMOUTH (England), Feb 4: British banks that fail to shield their day-to-day banking from risky investment activities will face being broken up, finance minister George Osborne said on Monday.

Britain is shaking up its system of bank regulation following the 2008 financial crisis, when the government poured 65 billion pounds of taxpayers’ money into rescues of Royal Bank of Scotland and Lloyds. The sector has also come under fire for rigging the Libor global interest rate, mis-selling insurance, breaking money laundering laws and paying bonuses widely seen as excessive.

Banks were already expected to have to “ring-fence” operations such as standard bank accounts and payments from their riskier investment banking activities, which will hit major players such as Barclays, HSBC, and RBS.But Osborne said he was prepared to go further. “If a bank flouts the rules, the regulator and the Treasury will have the power to break it up altogether full separation, not just a ring-fence. In the jargon, we will ‘electrify the ring fence’,” he said in a speech.

The break-up of banks which fail to keep to the rules was demanded by members of parliament who reviewed government plans late last year. Under the new rules, the Bank of England will monitor whether banks ensure that risks taken by their investment banking arms do not endanger their retail divisions.

If the central bank finds a breach, the government will make the politically sensitive decision on whether to employ the “nuclear option” of forcing banks to sell one of the two arms.

Osborne said the government could punish directors of failed banks by banning them from the industry. “I want to see how we can strengthen the sanctions regime for senior bankers — for example, should there be a presumption that the directors of failed banks do not work in the sector again?” he said.

RBS is expected to be fined for attempted manipulation of Libor this week. Osborne repeated his call for fines to be paid out of money earmarked for bankers’ bonuses, saying it would cause “enormous public anger” if the taxpayer footed the bill. “The thing that could have potentially been the cause of real public anger this spring (would have been) money from the taxpayer going to pay the RBS Libor fines in America,” he said.

Asked whether there should be resignations at RBS as a result of the bank’s imminent fine for rate rigging, Osborne said it was “quite well known that RBS are thinking about changes” amongst the investment bank’s senior management.—Reuters