The 'Big Four' refers to the four largest firms in the world of accountancy and auditing, which include Deloitte, Ernst & Young, KPMG, and PricewaterhouseCoopers, as well as the major commercial banks in the UK such as Barclays, Lloyds, HSBC, and Royal Bank of Scotland.
Ernst & Young (EY) is a multinational professional services firm providing advisory, assurance, tax, and transaction advisory services. EY is recognized as one of the 'Big Four' accounting firms globally.
EY is one of the Big Four accounting firms, providing assurance, tax, transaction, and advisory services internationally. Founded in the early 20th century, it rebranded to EY in 2013 and operates in over 150 countries.
KPMG is one of the Big Four international professional services networks, providing audit, tax, and advisory services across over 150 countries.
