The Libor-rigging scandal and provisions to cover mis-selling claims for payment protection insurance and interest rate swap products mean bottom-line pre-tax profits are expected to slump from £5.9 billion in 2011 to below £1 billion.
Stripping out one-off factors, analysts expect profits of £7.18 billion for 2012, up 28% on 2011, with more than half of this expected to come from its investment banking division.
More top news
The government says it won't ever completely decriminalise drugs but has it worked for other countries?
The owners of Merseyside's oldest pub have released the note written to them by thieves who raided and flooded their building.
Apple chief executive Tim Cook has publicly came out as gay in an article he wrote for a business magazine.