Chancellor George Osborne is to announce an inquiry into UK banking standards, with the Serious Fraud Office (SFO) also considering launching criminal prosecutions over the LIBOR rate-fixing scandal.
Analysts have suggested the fallout from the LIBOR price-fixing scandal may ultimately lead to significant asset disposals or even a break-up of the bank.
The reputation of the UK banking sector hit a new low last week after the FSA hit Barclays with its largest ever fine of £59.5m for breaching LIBOR regulations.
Barclays bank chairman Marcus Agius has confirmed his resignation, admitting the "the buck stops with me" for the firm's interest rate fixing scandal.
Barclays record FSA penalty for LIBOR manipulation will be superseded by other banks' fines as the investigation deepens, according to Schroders' Richard Buxton.
Barclays, HSBC, Lloyds and RBS have agreed settlements with the FSA after the regulator found "serious failings" in their sales of interest rate hedging products.
Chancellor George Osborne has pledged to use fines imposed by the Financial Services Authority to compensate taxpayers in the wake of the LIBOR scandal.
Chancellor George Osborne has called the manipulation of LIBOR rates by Barclays traders "a shocking indictment" of the greed of the financial sector, while confirming RBS and HSBC are also under investigation.
Barclays' share price plummeted 18% early this afternoon amid calls for boss Bob Diamond to quit in the wake of the LIBOR scandal, and following a speech from George Osborne attacking its traders 'systematic greed'.
RBS and Lloyds, the two UK tax-payer backed banks, are among a dozen financial groups being investigated for manipulating the LIBOR rate, which resulted in a record £290m regulator fine for Barclays, it was revealed yesterday.