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The Importance of Working With a Gas Engineer It's best to always employ an expert when working with gas. You can be sure that your property is safe and that you're adhering to all laws and regulations. In the event of an alleged gas emergency Call national grid at 0800 111 999. They will stop your meter and tell you to contact an electrician. Gas Safety Certificates Gas safety certificates (also called CP12 Certificates) are legal documents that prove the safe operation of gas appliances in residential homes. They are usually required by landlords
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