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The Importance of Working With a Gas Engineer It is recommended to be in the hands of a professional when working with gas. This way, you'll be sure your property is secure and you're following the legal guidelines. If you have an emergency gas situation Call national grid at 0800 111 999. They will cap your meter and tell you to contact an electrician. Gas Safety Certificates Gas safety certificates (also called CP12 Certificates) are legal documents that confirm safe operatio
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