These senior people have now been named by the BBC's business editor Robert Peston: Paul Tucker at the Bank of England, and Bob Diamond at Barclays.

BBC: The strange silence and an absence of information

But Barclays was still raising the alarm a year later when former CEO Robert Diamond discussed Libor with current Bank of England Deputy Governor Paul Tucker in October 2008.

WSJ: U.K. Must Restore Confidence in London