Barclays may raise funds
Under-pressure bank Barclays has said it is considering raising capital and "other options" as part of plans to strengthen its balance sheet.
Barclays, Britain's second biggest bank, could boost capital by offering existing investors preference shares.
Shares in the bank fell 14% to 207½p. Earlier this year, Barclays raised £4.5bn - mainly from investors such as Qatar's sovereign wealth fund.