Barclays boss Bob Diamond is facing growing calls to quit as he said all those responsible for the rate-rigging scandal should pay the price.

With Britain's biggest banks facing the threat of a criminal investigation over the activity that could cost the industry billions of pounds, the under-fire chief executive has agreed to a grilling by MPs.

Senior politicians have been piling the pressure on top executives at Barclays, following revelations that traders helped rig key bank-to-bank lending rates, at the height of the financial crisis

Prime Minister David Cameron said it was very important that accountability for what went on "goes all the way to the top of that organisation" and that Mr Diamond had "some serious questions to answer".

Labour leader, Ed Miliband said that he wanted to see the force of the law brought against those responsible.