Greenhouse gas removal (GGR) methods capture greenhouse gases from the atmosphere and store them for decades to millennia. These technologies will be required to meet the Paris Agreement’s temperature goals, alongside rapidly reducing emissions. Biochar, a charcoal-like substance derived from organic material, is one such method, offering the potential to remove carbon dioxide from the atmosphere and store it durably in a cost-effective manner, while delivering other benefits for agriculture, soil remediation or construction. It can also be deployed as an emission reduction technology. In the UK, biochar is regulated by UK waste law. Current waste regulations impose high costs on biochar producers, which hinders the deployment of biochar as a GGR method at scale. This policy briefing examines UK waste regulations that apply to biochar and makes recommendations on how they could be changed to support its deployment.