The Big 4 accountancy firms – EY, PwC, Deloitte and KPMG – are the largest professional services firms in the world. They provide audits, assurance services, taxation, management consulting and actuarial services for public and private companies across the globe.

Their clients include some of the world’s most significant businesses and governments, including 99% of the FTSE 100. These CPAs are widely regarded as leaders in the accounting profession and offer a wide range of services.

Who are the Big 4 accountants UK?

These firms operate in more than 150 countries with over 700 offices worldwide and employ over 53,000 people. They offer a broad array of accounting, auditing, taxation, advisory, and consultancy services, including business performance, Accountants London, digital adoption and transformation, and environmental, social, and governance.

Originally founded in 1921, Arthur Young & Company and Ernst & Young merged to form the global accounting firm. They have a reputation for their high level of ethics and quality service.

They also have a strong focus on social impact, collaboration and sustainable career growth for their employees. The firm offers training, a flexible work environment and a competitive compensation package.

Despite their dominance in the market, the Big Four have faced numerous complaints about the quality of their audits and are under scrutiny from regulators for their practices. Rachel Reeves, the chair of the Business, Energy and Industrial Strategy (BEIS) select committee, said in a report in April that “The big four have shut out rivals and deliver audits which investors and the public cannot trust”. She called for a break-up of the Big Four.