Markel Insurance, through its London-based Markel International Insurance Company Limited and UK operations, is a major global insurer known for its specialist approach, serving both large businesses and SMEs. Despite its public commitment to corporate social responsibility and environmental stewardship, the company’s business model continues to provide crucial insurance to the fossil fuel industry. It explicitly markets its expertise in underwriting the energy sector, including upstream, midstream, and downstream oil and gas operations. This direct financial support facilitates the expansion of fossil fuel projects, which stands in direct opposition to global climate targets. Markel has faced shareholder pressure, with a 2025 proposal asking for disclosure of its climate emissions from underwriting. The proposal was refused by Markel.