https://bass-adams-2.hubstack.....net/learn-about-gas-
Gas Safety Certificates For Landlords Gas safety certificates are required by law for landlords. The certificates must be issued prior to the move-in of new tenants. They must be renewed each year. Failure to comply can result in hefty penalties. A CP12 certificate is proof that a licensed engineer has examined a property's gas appliances and flues. It also certifies that the appliances are in compliance with British safety standards. Commercial Gas Safety Inspection Certificat