The Prime Minister's announced a parliamentary inquiry into the banking scandal. 

It comes after Barclays' 291 million pound fine for interest rate fixing - the bank's chairman Marcus Agias resigning - and fraud investigators saying they'll decide within a month whether criminal prosecutions are appropriate against those involved.

But Chief Executive Bob Diamond's signalled he'll fight for his job, saying he wants to "make sure that it cannot happen again".

David Cameron's been speaking in the COmmons