Gas Leak Emergencies London – Gas Leak Detection & Repair

Urgent gas leak in London? Have you turned off your gas supply due to a suspected gas leak or has it been switched off by the local gas service provider due to a leak? Contact us today to locate and repair the gas leak in order to reinstate your supply as soon as possible

Our team of qualified and experienced Gas Engineers have equipment required to locate and repair gas leaks from your pipework or appliances. We specialise in locating boiler gas leaks and gas leaks from exposed pipework. Concealed pipework within walls and floors are harder to find. In such scenarios it may be more cost efficient to replace the section of pipework affected. Our Engineers will carry out a thorough assessment and provide a Gas Leak Report and recommend the best course of action. 


  • Open all doors and windows to allow fresh air to enter the building as soon as possible.
  • If the metre is not in a basement or cellar, turn off the gas emergency control valve (also known as the gas emergency shut off valve) at the metre.
  • Put out all open flames, and refrain from smoking.
  • Avoid operating electrical switches, including turning on or off light switches, as doing so could ignite escaping gas.
  • Get in touch with the local National Gas Emergency service number. In England that number is 0800 111 999
  • If the engineer attending notices a problem with any gas appliances, follow their instructions on how to operate the equipment. Our engineers will ensure the equipment is either working correctly or safe before leaving your property.
  • Visit your doctor or hospital right away if you’re feeling ill, and let them know you may have been exposed to carbon monoxide.
  • Restarting the gas supply should wait until it has been inspected by a Gas Safe Engineer

What are the Signs of a Gas Leak

Gas leaks can be dangerous and should be addressed immediately. Here are some common signs that may indicate a gas leak:

  • Distinctive Smell: Natural gas is odourless, but suppliers add a chemical called mercaptan to give it a distinctive rotten egg or sulphur-like smell. This is the most common sign of a gas leak
  • Hissing or Whistling Sound: If there’s a gas leak in or near your home, you might hear a hissing or whistling sound near the gas line or appliance
  • Physical Symptoms: Exposure to a gas leak can cause physical symptoms such as headaches, dizziness, nausea, eye and throat irritation, breathing difficulties and fatigue
  • Dead or Discoloured Plants: If there’s an underground gas leak, plants above or near the leak may die or become discoloured
  • Visible Signs: You may see a white cloud, mist, bubbles in standing water, or blowing dust
  • Higher Gas Bills: An unexplained increase in your gas bill could indicate a leak.

If you suspect a gas leak, it’s important to act quickly. Do not use electrical devices, turn on lights, or light a match. Leave the area immediately and call your gas company or a professional to investigate

What does it cost to repair a gas leak in my property?

Gas leaks can be from major parts on a gas boiler or simply a loose connection on a fitting or pipe. Our prices start from £75 + VAT and this includes locating and repairing the gas leak in your property. Call us today for more information.

What happens after you  have repaired the gas leak in my property?

After repairing your gas leak our engineers will use gauges to test your gas installation to ensure there are no further leaks present and once satisfied issue a gas safety certificate.

What other Gas Related Services do you Provide?

Gas Safety Certificate:

A certificate issued after inspection and testing of the complete gas installation within a property, including the gas appliances. The installation is checked for both correct operation and safety. In the UK a Gas Safety Certificate is a legal requirement to rent a property and needs to be renewed every 12 months. In addition carrying out a regular gas safety check will ensure gas leaks are detected before they become a problem

Boiler Servicing: 

An annual boiler service is carrying out a series of checks and cleaning to the boiler in order to maintain and increase the life of a boiler. It is also a requirement by the manufacturer to honour any boiler guarantees. In addition gas leaks can also be detected during a boiler service

Boiler Installation:

We provide a variety of Gas Boiler installations including Heat Only, System Boilers and Combi Boilers. We are experienced and registered installers of all major brands such as Idea, Baxi, Main, Vaillant, Keston and many more. We are able to offer replacement of old boilers that may be worn or corroded resulting in leaks.

Gas Appliance Installation:

Installing and servicing a variety of water heating and cooking appliances. Including pipework and all associated works. In addition we are able to replace old and leaking appliances.

Carbon Monoxide Detector: 

Installation of mains powered Carbon Monoxide Detectors. A device that monitors and detects Carbon Monoxide leakage from a gas appliance or gas boiler. Whilst not a legal requirement for a modern gas boiler installation, it is an advisable and low cost precautionary measure. Installation of wireless and wired carbon monoxide detectors

Frequently Asked Questions

What if my Gas has been disconnected by the Gas Service Provider

The Gas Emergency Service provider typically carries out a test from the gas metre and if a leak is indicated they disconnect the supply. Locating the leak within the property is beyond their remit and it is the responsibility of Gas Safe Registered organisations such as ourselves to repair the leak before the supply can be reconnected. Call us today to arrange an urgent appointment 

What type of pipe work can you repair?

We specialise in copper and plastic gas supply pipework up to a maximum of 35mm in diameter.

Can a gas leak be dangerous? 

Yes. A gas leak can be extremely dangerous, natural gas is extremely flammable and a leak could result in an explosion or fire. Furthermore, inhaling gas can result in health issues such as dizziness, nausea and headaches. If you suspect a gas leak you must act quickly and safely.

What should I do if I am unable to smell gas? 

Some people may be unable to detect gas because of a medical condition or because they have grown accustomed to the odour. If you are concerned about a gas leak but are unable to detect it, call the National Gas Emergency Service at 0800 111 999 and follow their instructions. You can also buy a gas detector, which will alert you if there is gas in your home.

Can I use my gas appliances if I think there might be a gas leak? 

No. If you suspect a gas leak, you should not use any gas appliances. This could potentially ignite the gas resulting in an explosion or fire. Instead take the steps outlined in question 1 and contact the National Gas Emergency Service.

What should I do if I suspect a gas leak while I am away from home? 

If you suspect a gas leak while you are away from home, call the National Gas Emergency Service immediately at 0800 111 999. You should also ventilate the area before leaving by opening windows and doors.

Can a gas leak cause long-term health problems? 

Inhaling natural gas can cause dizziness, nausea, and headaches in the short term. The long-term effects of inhaling gas, on the other hand, are generally not serious, and symptoms should disappear within a few hours of being in a well ventilated area. If you have ongoing health problems as a result of a gas leak you should see a doctor.

Is it safe to use a gas cooker if I suspect a gas leak? 

No, you should not use a gas cooker or any other cooking and heating appliances if you suspect a gas leak. This could potentially ignite the gas, resulting in an explosion or fire. Instead take the steps previously and contact the National Gas Emergency Service.

Will my insurance cover damage caused by a gas leak?

It is possible that the damage caused by a gas leak will be covered by your insurance policy. However, this will be determined by the terms of your policy. It is a good idea to go over your policy or contact your insurance provider to make sure you understand what is and is not covered.

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