EY

EY is one of the Big Four professional services firms, offering audit, tax, consulting, and transaction advisory services to clients around the world. Headquartered in London and operating in over 150 countries, EY serves governments, corporations, and financial institutions across industries including tech, healthcare, finance, and energy. The firm is structured as a global network of member firms and employs over 300,000 people. EY is known for its strengths in assurance and deal advisory, as well as its fast-growing consulting business, which supports clients on digital transformation, ESG strategy, and cyber risk. The firm invests heavily in innovation, including its proprietary AI and analytics platforms, and has made bold moves to modernise its business model—most notably exploring the separation of audit and consulting. EY also plays a leadership role in sustainability reporting and inclusive leadership development through initiatives like EY Ripples.