One critical aspect to understanding climate-related disclosure is how businesses measure and manage their Scope 3 emissions. An often overlooked but significant component of a company's carbon footprint - Scope 3 -is not without controversy. The carbon footprint of a business is divided into three scopes: Scope 1, 2 and 3. Scope 1 includes all emissions under the business’ direct control such as company cars. Scope 2 includes all emissions which a business can choose how to procure, but not how to generate: utilities. Scope 3 is everything that remains in the value/supply chain. According to the GHG Protocol, Scope 3 greenhouse gas (GHG) emissions account for more than 70% of a business’s carbon footprint. For big businesses, this means an enormous tail end of SME suppliers. The controversy around Scope 3 can be best described by one of Startmate’s ClimateTech Fellows: “why is the onus of Scope 3 emissions on the reporting company when they’re the Scope 1 emissions of their supplier?”