BSI Assurance Ltd complies with ISO/IEC 17021-1:2015 and is accredited by most of the world's leading accreditation bodies. Some BSI offices are accredited to ISO 14065:2007 for Greenhouse Gas (GHG) verification activities. In order to provide confidence and demonstrate the impartiality of our assessment processes, BSI believes in the principle of openness, while respecting the strict confidentiality of customer data derived from its clients.