London risks losing its status as the world's top financial center as the $360 trillion interest-rate fixing probe follows a series of market abuses by banks that eroded trust in a city already shrinking faster than rivals.

JPMorgan Chase & Co.'s trading loss of at least $2 billion, the alleged $2.3 billion fraud at UBS AG and the investigation of at least a dozen banks including Barclays Plc for rigging global interest rates all happened in London in the last year. The effect is taking a toll on the capital of a country enduring its first double-dip recession since the 1970s, which fired more financial-services workers than any other country in 2011 and again this year.

“My heart sinks every time there is a scandal and the perpetrators are in London, even if it is not always the U.K.'s responsibility, it is under our noses,” Sharon Bowles, chairwoman of the European Parliament's economic and monetary affairs committee, said in an interview. “There is an effect on the U.K.'s reputation, and it reinforces the view that even after all the apologies there is much to do.”