Despite the Chancellor’s efforts to widen the scandal over Libor to the last government, the focus remains firmly on Barclays. Today’s testimony to the Commons Treasury Committee by Barclays chairman Marcus Agius is likely to ratchet up the pressure on the bank, not least because of the news that Bob Diamond, who resigned as chief executive last week, will get a pay-off of up to £2 million. The unavoidable impression is of bankers presiding over malpractice and failure — yet still being handsomely rewarded. But the political fallout is toxic too.