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.
Royal Bank of Scotland i among five banks hit with fines over involvement in the rigging of global currency markets and has agreed to pay $669 million (£430 million) to US authorities.
It comes on top of a £399 million penalty last November, including £217 million by the FCA and $290 million (£186 million) by the US Commodity Futures Trading Commission (CFTC).
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.