Barclays scandal: Paul Tucker to give evidence next week Mr Tucker has asked to give evidence to MPs "as soon as possible" to clarify his position regard to the events involving the Bank of England in the scandal, including the telephone conversation with Bob Diamond on 29 October 2008. He will appear before the Treasury Select Committee investigating the Libor rate-fixing scandal on Monday afternoon and Marcus Agius, the Barclays chairman who resigned over the scandal last week, will give evidence on Tuesday morning. Barclays and other banks have been accused of manipulating the Libor rate, which is used to set the borrowing costs for millions of consumers, businesses and investors. Barclays was fined £290m by UK and US regulator over the scandal. An email released by Barclays suggested that Mr Tucker gave a hint to Bob Diamond, the bank's chief executive, in 2008 that the rate it was claiming to be paying to borrow money from other banks could be lowered. Bob Diamond, who resigned as Barclays chief executive on Tuesday, was questioned yesterday about the email by MPs investigating rate rigging at the bank. Andrew Tyrie MP, chairman of the Treasury Committee, suggested the email could easily be read as approval for Libor supression from the Bank.