London's cheapest Gas Safety Certificates from just £49 inc VAT. All inspections carried out by Gas Safe registered engineers. Covering all London boroughs and M25. Same-day CP12 available — WhatsApp for an instant quote.
All gas safety inspections carried out by Same Day Certificates are completed by Gas Safe registered engineers operating. Every engineer carries a photo ID card with their Gas Safe licence number, which tenants have the right to inspect before allowing access.
A Gas Safety Certificate — formally called a Gas Safety Record, and colloquially known as a CP12 — is the official document issued by a Gas Safe registered engineer after a thorough annual inspection of all gas appliances, pipework, flues, and ventilation in your property. The CP12 confirms that all gas installations have been checked against current safety regulations and are operating safely.
The term "CP12" originates from the CORGI (Council for Registered Gas Installers) era before Gas Safe Register became the sole legally recognised gas safety authority in Great Britain on 1st April 2009. While the official document is now called a Gas Safety Record, many and engineers still refer to it as a CP12.
Under the Gas Safety (Installation and Use) Regulations 1998, every private in England, Scotland and Wales is legally required to:
Our pricing is based on the number of gas appliances inspected. Gas appliances include boilers, gas hobs, gas ovens, gas fires, and any other gas-connected appliances. There are no call-out fees, no hidden charges, and VAT is always included.
Our Gas Safe registered engineers carry out a thorough inspection of every gas installation in your property. The inspection covers all items required under the Gas Safety Regulations and BS 7671 standards. Here is what is checked:
After the inspection, your engineer will complete the official Gas Safety Record. This document contains:
Your certificate is issued digitally on the same day as the inspection and is immediately available via your free client portal. You can download and share it instantly with tenants, letting agents, or mortgage providers.
Beyond the annual gas safety certificate, Same Day Certificates provides a comprehensive range of gas services for London and homeowners:
Gas appliances that are not serviced and inspected regularly can become dangerous. The main risks include:
An annual gas safety certificate is the most important step a can take to protect their tenants and their investment. We also strongly recommend fitting carbon monoxide alarms in every room with a gas appliance — this is now a legal requirement in England.
WhatsApp us now to get an instant quote and book your gas safety inspection. Our team is available Monday to Friday 9am–6pm and Saturday 10am–4pm. Same-day and next-day slots are often available across London and M25.
📲 Book via WhatsAppWe've been issuing Gas Safety Certificates in London. Here's how we compare to other options.
| Feature | Same Day Certificates | Local Plumber | Large Corporate |
|---|---|---|---|
| Gas Safety (CP12) Price | from £49 | £75–£120 | £80–£150+ |
| Gas Safe Registered | ✅ Yes | ✅ Usually | ✅ Yes |
| Same-Day Available | ✅ Often available | ❌ Rarely | ⚠️ Sometimes |
| Digital Certificate Same Day | ✅ Yes | ❌ Often delayed | ⚠️ Sometimes |
| Boiler Service Combo | ✅ £109 bundle | ❌ Separate booking | ⚠️ Higher price |
| All London Boroughs | ✅ All 32 + M25 | ❌ Local area only | ✅ Usually |
| Free Client Portal | ✅ Yes | ❌ No | ❌ No |
Carbon monoxide (CO) is an odourless, colourless gas produced by incomplete combustion in gas appliances. It is responsible for over 50 deaths per year in the UK and over 4,000 A&E attendances. Faulty boilers, gas fires, and poorly ventilated appliances are the most common causes in rental properties.
The annual Gas Safety Certificate inspection includes a combustion analysis of every gas appliance, directly measuring CO levels. Our Gas Safe engineers use calibrated flue gas analysers to detect dangerous CO levels and will immediately disconnect any appliance found to be producing unsafe quantities of carbon monoxide.
Since 1st October 2022, in England are legally required to fit a carbon monoxide alarm in every room with a fixed combustion appliance (including gas boilers). The alarm must be in working condition on the first day of a new tenancy and checked annually. Failure to comply can result in a penalty of up to £5,000.
| Requirement | Detail |
| Alarm required in | Every room with a fixed gas appliance (boiler, fire, etc.) |
| Alarm type | BS EN 50291 compliant alarm — battery or mains |
| Initial test | Must be tested on first day of tenancy |
| Annual check | Confirmed working at gas safety inspection |
| Penalty for non-compliance | Up to £5,000 |
No — if your property has no gas supply and no gas appliances, a Gas Safety Certificate is not required. You still need an EICR and EPC. If you have an electric boiler or heat pump, these are covered by the EICR.
Yes — you can have your gas safety inspection carried out up to 2 months before the expiry date and still maintain your original renewal anniversary. This is useful for who want to align renewals with tenancy changes.
No. A boiler service and a gas safety certificate are different. A service maintains the boiler's efficiency and reliability. A CP12 is a legal inspection that assesses safety compliance. Our £109 bundle combines both — the most cost-effective option for.
Beyond the annual Gas Safety Certificate, we offer a comprehensive range of boiler and gas services for London.
Keeps your boiler running efficiently, maintains manufacturer warranty, and reduces the risk of costly breakdowns. Full strip-down, clean and combustion analysis included.
Book Boiler ServiceCombine your annual CP12 inspection and boiler service in a single visit. Most popular package for London — fulfils legal requirements and maintains boiler health in one go.
Book BundleNew boiler installation from £550. Baxi, Alpha and Vaillant packages available from £1,500 including up to 7-year manufacturer warranty. Full installation, commissioning and Gas Safe certification included.
Get Installation QuoteGas leak? Boiler breakdown? Our Gas Safe engineers respond quickly to diagnose and fix gas issues across London. Emergency callout available for urgent situations — tenant safety is always our priority.
Emergency CalloutHouses in Multiple Occupation (HMOs) in London are subject to the same annual gas safety requirement as standard rental properties — but with additional scrutiny from local authority licensing inspectors. Your HMO Gas Safety Certificate (CP12) must be provided to all tenants and made available to the licensing authority on request.
Common gas appliances in London HMOs include individual room-mounted gas heaters, shared boiler systems with multiple zones, communal gas hobs, and prepayment meter arrangements. Our Gas Safe engineers are experienced with all HMO configurations and can inspect complex shared systems efficiently.
Commercial properties in London — including restaurants, cafes, hotels, offices and retail premises — all require annual gas safety certificates for any gas appliances on the premises. Commercial gas safety certificates must be carried out by Gas Safe registered engineers with appropriate commercial endorsements.
Our commercial gas engineers are fully qualified to work in all commercial environments. We have extensive experience with commercial catering equipment, commercial heating systems, and complex industrial gas installations across all London boroughs.
Need an urgent CP12? WhatsApp us before midday and we'll do our very best to arrange a same-day visit. All Gas Safety Certificates are issued digitally within hours of inspection.
WhatsApp us now on +447979891241. Available Mon–Fri 9am–6pm · Sat 10am–4pm. Covering all 32 London boroughs and M25.
Looking for a cheap gas safety certificate near me in London? Same Day Certificates provides Gas Safe registered CP12 inspections across all 32 London boroughs and the M25 corridor. Whether you're in North London (Barnet, Enfield, Islington), South London (Brixton, Croydon, Wimbledon), East London (Hackney, Ilford, Stratford), or West London (Ealing, Hounslow, Kensington) — we have engineers in your area ready to book.
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We cover every London borough and surrounding M25 area. Click your area for local prices and to book an engineer. Same-day appointments available throughout London.
We're expanding across the UK. Click your town or city to see prices, book a certificate, and get your CP12, EICR, EPC or PAT Test arranged fast.
Gas Safe registered engineers covering all London boroughs and M25. Same-day CP12 available.
We cover every London borough and surrounding M25 town for Gas Safety Certificate bookings. Click your area below for local prices, FAQs and an instant WhatsApp booking. Same-day appointments available throughout London.
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