What will Treasury Committee MPs ask Bob Diamond?
Mark Garnier MP, who is one of the members of the Treasury Committee, says he wants to get to the bottom of "who knew what at Barclays" when Bob Diamond appears before them.
Mr Diamond is due to face MPs a day after resigning as Barclays chief executive in the wake of the inter-bank interest rate-fixing scandal.
MPs are also likely to ask about the role of the Bank of England and the previous government in the rate-fixing.
04 Jul 2012