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The Importance of Working With a Gas Engineer When working using gas, it's recommended to work with a registered professional. This way, you can be certain that your property is safe and that you're following the legal guidelines. Call National Grid at 0800 111 9999 in case of a suspected emergency. They will shut off your gas meter and inform that you contact an engineer. Gas Safety Certificates Gas safety certificates (also known as CP12 Certificates) are legal documents that confirm safe operation of gas appliances in residential properties. They are typic
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