Deloitte

Deloitte traces its origins to William Welch Deloitte, who established an accounting practice in London in 1845. Today, it operates as a network of separate, locally governed member firms coordinated through Deloitte Touche Tohmatsu Limited rather than as one multinational corporation.

The network provides audit and assurance, consulting, tax, risk and regulatory, strategy and transactions, cyber, engineering, AI and data, and other professional services. Its scale is a major differentiator: Deloitte serves clients across more than 150 countries and territories and reported global FY2025 revenue of US$70.5 billion.

For students, Deloitte is especially strong where business, technology, regulation, and implementation overlap. Its multidisciplinary model is relevant to large transformation programmes, technology and AI adoption, corporate reporting and controls, cyber risk, sustainability assurance, and complex transactions.