Top 10 Consulting Companies in the World 2015

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1. Deloitte

One of the largest professional services providers in the world Deloitte, with revenue of $34.2 billion has about 210,400 employees serving select clients.

This makes it the largest professional services network in the world by both revenue and by number of professionals. Each of network of member firms of Deloitte Touche Tohmatsu Limited, a UK based private company is commonly referred to as Deloitte. The global headquarters of the company are located in the New York City, US. The services provided by the company include consulting, audit, tax, financial advisory and enterprise risk. In fact Deloitte refers to the brand under which independent firms across the globe collaborate to provide the above mentioned services. It was also reported to have served the largest number of clients out of FTSE 250 companies in 2012 by Accountancy Age.

The origins of the company dates back to 1845 when an office by William Welch Deloitte. was opened in Basinghall Street in London. In 1896 Haskin & Sells, an auditing firm was formed in New York by Charles Waldo Haskins and Elijah Watt Sells. In 1898 Touche Niven was established which in 1947 merged with A.R Smart and an organization started by Geroge Bailey to form the Touche, Niven, Bailey & Smart. This organization created a separate management consulting function which was later named as Touche Ross in 1969. Also in 1975 Tohmatsu Aoki & Co., a Japanese firm joined the Touche Ross network. Touche Ross firm was merged with Deloitte Haskins & Sells and Deloitte & Touche was formed in 1989. It was finally in 1993 that the international firm was renamed as Deloitte Touche Tohmatsu. This was done in order to use both of the names Deloitte and Touche and at the same time to reflect the contribution from Tohmatsu, the Japan based firm.

Revenues (in $billion):34.2

Ranking Methodology:

17 consulting companies world over were selected on the basis of their revenues in 2014. The Consulting firms have been ranked as per their revenues.

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