ERM Worldwide Group Limited

ERM (Environmental Resources Management), operating as The ERM International Group Limited, is the world's largest advisory firm focused solely on sustainability. Founded in 1987 through the merger of two consultancies — the UK-based ERL (established 1971) and USA-based ERM (established 1977) — ERM partners with clients to operationalize sustainability at pace and scale across strategy, technical delivery, and business transformation. The company provides services spanning climate and net zero planning, environmental health and safety management, social impact and human rights assessments, circular economy consulting, carbon markets, capital projects and infrastructure advisory, supply chain sustainability, and ESG reporting and disclosure. ERM serves clients across chemical, financial services, manufacturing, mining and metals, oil and gas, power, renewables, and technology sectors. The firm employs more than 8,000 professionals across 140+ offices in 40+ countries. In 2021, global investment firm KKR acquired a majority stake in ERM, valuing the company at approximately $2.7 billion; a minority stake continues to be held by ERM partners. ERM reported revenue of US$1.323 billion in 2023. The company is headquartered at Exchequer Court, 33 St Mary Axe, London, United Kingdom.