Barclays has been fined a record £284.4 million by British regulators and around £1.5bn in total as part of a UK and US settlement with authorities over the foreign exchange trading scandal.
Five banks - including Barclays and Royal Bank of Scotland - were fined a total of more than $5 billion by the US Department of Justice over the manipulations.
Antony Jenkins, chief executive at Barclays, apologised for the bank's role in the scandal.
RBS has also so far dismissed three staff and a further two are suspended.
Calling themselves "The Cartel" or "The 3 Musketeers," traders from rival banks shared information and colluded to move the market prices.
A look at the huge numbers at play in the foreign exchange (Forex) markets as five big banks receive huge fines for manipulating the rate.