Deloitte Touche Tohmatsu Limited is a multinational professional service company which was founded in 1845. They are the leading auditing company amongst UK FTSE 250 companies and the top 500 companies in India.
EY is a multinational professional services company founded in 1989 through the merger of Ernst & Whinney and Arthur Young & Co. They are known as one of the "Big Four" audit firms.
The Institute of Corporate Responsibility and Sustainability is a UK professional body which helps members demonstrate their commitment to responsible & sustainable business.
PricewaterhouseCoopers is a professional services company founded in 1998 through the merger of Price Waterhouse and Coopers & Lybrand where were formed respectively in 1849 and 1854. The company is well-known for its assurance, tax and advisory practices.