Gas Safety Certificate in Twickenham: What It Is and How to Book One

If you’re a landlord in Twickenham or anywhere in the TW area, you’re legally required to have a valid Gas Safety Certificate for every property you let. This is a plain-English guide to what the certificate is, who needs one, and how to book a Gas Safe registered engineer to carry out the check.

What is a Gas Safety Certificate?

A Gas Safety Certificate — often called a CP12 — is the official record that a Gas Safe registered engineer has inspected the gas appliances, fittings and flues in a property and confirmed they’re safe to use. The engineer checks each gas appliance for correct operation, safe gas pressure, proper ventilation and that harmful combustion gases are being safely removed.

Once the check is passed, you’re issued a dated certificate listing every appliance inspected and the result. It’s valid for 12 months.

Who legally needs one?

• Landlords must have a valid certificate for every gas appliance and flue in a rented property, renewed every year, with a copy given to tenants. This is a legal duty under the Gas Safety (Installation and Use) Regulations — not optional.
• Homeowners aren’t legally required to hold a certificate, but an annual gas safety check is strongly recommended, especially before selling, and is often required by mortgage lenders or insurers.

What the engineer checks

A gas safety inspection typically covers:

• Every gas appliance (boiler, hob, fire, water heater) for safe operation
• Correct gas pressure and heat input
• Adequate ventilation and air supply
• Flues and chimneys clearing combustion products safely
• Safety devices working correctly
• Visible pipework and fittings for soundness

If anything is unsafe, the engineer will explain the fault and what needs doing before the certificate can be issued.

Why it must be a Gas Safe registered engineer

Only an engineer on the Gas Safe Register can legally carry out gas work and issue a certificate in the UK. Anyone offering to do gas work without being registered is breaking the law and putting lives at risk. Always ask to see the engineer’s Gas Safe ID card, and check the registration number — ours is 501588.

Book a Gas Safety Certificate in the TW area

We’re Gas Safe registered and cover Twickenham, Whitton, Teddington, Hounslow, Richmond and the wider TW area. A gas safety check is a booked appointment rather than an emergency call-out, so call us to arrange a convenient time and we’ll get your certificate sorted.

And if you ever smell gas, that is an emergency — call the National Gas Emergency line on 0800 111 999 first, then call us. See our guide on what to do if you smell gas for the immediate steps.