Description:Bob Diamond gives evidence to critical British lawmakers a day after quitting as Barclays' chief executive over an interest rate rigging scandal. Diamond abruptly resigned on Tuesday just hours after Bank of England Governor Mervyn King and Financial Services Authority chairman Adair Turner effectively told Barclays Chairman Marcus Agius that the CEO was not the right man to reform the bank's culture after the scandal, people familiar with the matter said.(2:28)