Deloitte is one of the leading professional services firms , founded on its original audit services 175 years ago . It is now one of the largest in the country and is part of a global network spanning 150 countries and territories . It employs 20,000 professionals in the UK covering digital transformation , sustainability , cyber skills and financial advice for clients in the public , private and third sectors .

Expertise includes digital technology , procurement and supply chain , project management and logistics among others and industries covered include life sciences , energy , resources and industrial , financial services and government and public sector .

Operating in 146 countries , KPMG firms offer audit , tax and advisory services in capital markets and operates in areas such as cloud transformation , cyber security , transformative technology and powered enterprise . It serves the needs of business , governments and public sector agencies through to non-profits .

It believes technology can transform the way business is done , from strategy through to delivery , recognising emerging technologies maintain competitive advantage and increase success .

The consultancy has a strong network of alliances with some of the world ’ s top technology , data and services companies to help solve the most pressing challenges , including blockchain , digital labour and regulatory change .