Big Four



  • noun the four large British commercial banks: Barclays, LloydsTSB, HSB and Natwest, now joined by several former building societies that have become banks
  • noun the four largest international accounting companies: PricewaterhouseCoopers, Deloitte Touche Tohmatsu, Ernst & Young and KPMG
  • noun the four largest Japanese securities houses: Daiwa, Nikko, Nomura and Yamaichi