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The Importance of Working With a Gas Engineer When working with gas, it's always recommended to work with an authorized professional. You can be confident that your property is safe and that you're adhering to all legal regulations. Call National Grid at 0800 111 9999 in case of a suspected emergency. They will be able to cap your meter and tell you to contact an electrician. Gas Safety Certificates Gas safety certificates (also called CP12 Ce
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