Professional Services


Accenture is the world’s largest consulting firm (measured by revenues), a multinational that operates within outsourcing, technology and management. Originating as a division of Accounting firm Arthur Andersen in 1953, Accenture moved to its current home in Dublin, Ireland having previously been based in Bermuda.


Founded in London in 1845, Deloitte is now headquartered in New York and makes up the “Big 4” of professional services companies - along with Ernst and Young, Price Waterhouse Cooper and KPMG. It has an employee base in excess of 210,000 people and achieved revenues in excess of $34 billion (2014).


Ernst & Young, known as EY, is a professional services firm based in London. The company has an employee base of around 190,000 and achieved revenues in excess of $27 billion in 2014.  


PricewaterhouseCoopers is a multinational professional services network. It is the world's second largest professional services network, as measured by 2014 revenues. It is a network of firms in 157 countries with more than 195,400 people and was formed in 1998 by a merger between Coopers & Lybrand and Price Waterhouse. PwC's global headquarters are located in London, UK.

Tata Consultancy Services

Tata Consultancy Services Limited (TCS) is an Indian multinational information technology service, consulting and business solutions company headquartered in Mumbai. Established in 1968 as a division of Tata Sons Limited, TCS Ltd was incorporated as a separate entity in 1995.