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The Importance of Working With a Gas Engineer It is recommended to work with a professional when working with gas. You can be sure that your property is secure and that you're following all laws and regulations. In the event of an emergency gas situation, call national grid on 0800 111 9999. They will cap your meter and instruct you to call an electrician. Gas Safety Certificates Gas safety certificates (also known as CP12 Certificates) are legal documents that verify the safe opera
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