'Bob Diamond has some very serious questions to answer'

I think Bob Diamond has got some very serious questions to answer. He needs to explain what happened, why didn't Barclays spot it earlier, and what has changed at Barclays.

We have seen a huge scandal here in Barclays, as is clear, this doesn't just affect Barclays, banks on both sides of the Atlantic are being investigated by regulators. So we do need to get to the bottom of this. We need to find out what has happened and what lessons have been learned by the banks.