'Big Four' accountancy giants face UK probe

KPMG is one of the 'Big Four' accountancy firms being probed by British authorities. [Photo: AFP]

Almost two decades after the collapse of US giant Enron in a notorious accounting scandal, the accountancy sector is back in the spotlight, this time thanks to a string of scandals in Britain.

The sector's so-called "Big Four" Deloitte, EY, KPMG and PwC have a long-established oligopoly to advise and monitor big business, experts say.