Bank of England deputy governor Paul Tucker today requested to appear before MPs "as soon as possible" to clear up his role in the rate-fixing scandal.
Ahead of his own meeting with the Treasury Select Committee, former Barclays boss Bob Diamond released a record of a phone call with Mr Tucker discussing the key interest rate at the centre of the unfolding affair.
The note sent by Mr Diamond, who resigned with immediate effect yesterday, to the then-chief executive John Varley and his right-hand men Jerry del Missier ultimately led to Barclays staff pushing down the interbank lending rate, known as the Libor.
A statement from the Bank of England said: "Mr Tucker is keen to give evidence to the committee in order to clarify the position with regard to the events involving the Bank of England, including the telephone conversation with Bob Diamond on October 29, 2008."