In the wake of the Libor rigging scandal, there has been a renewed focus on the practices of the financial markets.
A review in September 2012 found that manipulation of the way Libor was fixed had damaged trust in the financial system and called for urgent reforms.
The role of the British Bankers' Association in overseeing Libor was severely criticised and responsibility for it was handed to America's Intercontinental Exchange Benchmark Administration this year.
Rules published in 2013 laid out new requirements for checking banks' submissions and monitoring for suspicious activity by benchmark administrators, as well as the policy on handling conflicts of interest.
In June, Bank of England governor Mark Carney backed plans laid out by the Fair and Effective Markets Review for the lengthening of the maximum sentence for market abuse from seven to 10 years.
A number of banks including Barclays, Lloyds Banking Group, the Royal Bank of Scotland and Deutsche Bank have been fined billions of pounds for their part in the Libor rigging scandal. But what exactly is the rate that was manipulated?
- Libor - or The London Interbank Offered Rate - is a benchmark that indicates the interest rate that banks charge when lending to each other.
- Each day, a panel of banks set out what rates they think they can borrow from others over a range of periods - from overnight up to 12 months.
- The data is collated, the top and bottom estimates are removed and the rest are then averaged to give a final figure.
- It is used as the basis for hundreds of trillions of dollars of loans and transactions around the world from complex derivatives to mortgages.
- Libor is seen as fundamental to the operation of UK and world markets.
Tom Hayes, who has been sentenced to 14 years in prison for manipulating Libor rates, built up a network of traders to help him carry out the fraud, the prosecution said.
Hayes was said to have once offered to pay a contact 100,000 US dollars if he kept the Libor rate as low as possible.
Mukul Chawla QC,prosecuting, said: "On an almost daily basis he set out to dishonestly manipulate or rig Libor at his bank and other banks."
"The motive was a simple one: it was greed", he added.
Former UBS and Citigroup trader Tom Hayes has been sentenced to 14 years in jail after a jury found him guilty verdict on eight counts of conspiracy to defraud for rigging Libor rates.
A trader, convicted over the Libor scandal, was paid £1.3m before tax in salary and incentives by UBS from September 2006 to December 2009.
Tom Hayes then joined Citigroup in 2009 because he "felt that UBS were not paying him enough", and received £3.5 million before tax for just nine months' work.
The prosecutor in his trial said Hayes immediately set about rigging Libor sending a message on his first day trading, saying: "Do me a favour and get the Libor rate up?".
Hayes was sacked from the bank after his methods were formally reported to senior management. He was later arrested in the UK in December 2012.
The new list is the first to be published since the general election. Some of those identified owed money to a handful of workers.Read the full story ›
The University of South Wales opened a centre in the Docklands in London, but has attracted no students and has been forced to close.Read the full story ›
The popularity of contactless cards has surged with a record £2.32 billion spent using this payment method in the UK in 2014.Read the full story ›
The 'Power UK Index' ranks the site's biggest independent sellers and reveals they have an average annual turnover of nearly £4million.Read the full story ›