The number of tipsters making complaints to the UK's financial watchdog has soared in the last year as “more scandals emerge” from the financial crisis, according to data seen by Financial News.

Law firm Pinsent Masons has collected data which shows that 1,367 whistle-blowing cases were opened by the Financial Conduct Authority last year, representing a 44% increase on 2013 and a 142% increase on 2012.