PwC

PricewaterhouseCoopers (trading as PwC) is a global professional services firm headquartered in London, United Kingdom.2It is the world's largest professional services firm measured by revenues and one of the "Big Four" accountancy firms.5

PwC has offices in 771 cities across 158 countries and employs over 169,000 people.4It had total revenues of $29.2 billion in FY 2011, of which $14.14 billion was generated by its Assurance practice, $7.63 billion by its Tax practice and $7.46 billion by its Advisory practice.

The firm was formed in 1998 by a merger between Coopers & Lybrand and Price Waterhouse. The trading name was shortened to PwC in September 2010 as part of a major rebranding exercise.

As of 2010 PwC was the seventh-largest privately-owned organization in the United States.