Deloitte Touche Tohmatsu Limited, commonly referred to as Deloitte, is a multinational professional services network with offices in over 150 countries
Ernst & Young Global Limited, doing business as EY, is a multinational professional services network with headquarters in London, England
KPMG International Limited is a British-Dutch multinational professional services network
PricewaterhouseCoopers is a multinational professional services network of firms
