Deloitte

Deloitte Touche Tohmatsu (also branded as Deloitte) is one of the largest professional services organizations in the world and one of the Big Four auditors, along with PricewaterhouseCoopers, Ernst & Young, and KPMG.

According to the organization's website as of 2008, Deloitte has approximately 165,000 staff at work in 140 countries, delivering audit, tax, consulting and financial advisory services through its member firms.

Its global headquarters are located in New York City, New York. European headquarters are located in London.