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Gas Leak in London? Call 0800 111 999 First

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The National Gas Emergency Service attends free, 24 hours a day, and they come first, before us, before anyone. Call them, make safe, and then call us for the repair that follows.

Smell gas? Call 0800 111 999 first.

The National Gas Emergency Service, free, 24 hours a day. Call them before you call us or anyone else. Then call us for the repair that follows.

Smell of gas in London: do this now, while you wait

  1. Call 0800 111 999 firstThe National Gas Emergency Service. Free, 24 hours. They make the property safe; that call comes before this one.
  2. No switches, no flames, no doorbellA spark is the danger. Don't turn anything on or off, including lights that are already on.
  3. Open doors and windowsVentilate as you leave, and get everyone outside.
  4. Turn off at the meter if safe to reachQuarter-turn the lever so it sits across the pipe. If the meter is in a cellar with a strong smell, skip it, outside matters more.

What causes a smell of gas in London

  • 01
    Ageing fittings

    Compression joints and flexible hoses behind cookers work loose over decades.

  • 02
    DIY and damage

    A nail through a buried run, a cooker moved for cleaning, the classics.

  • 03
    Appliance faults

    Poor combustion produces carbon monoxide without any gas smell, which is what the alarm is for.

  • 04
    Corroded pipework

    Buried steel gas barrel rusts from the outside in, especially under solid floors.

Local conditions we work around

Call the National Gas Emergency Service on 0800 111 999 first, in every case, before us or anyone else. What follows is often shaped by the building: in mansion blocks and converted houses the meter and the emergency control valve are frequently in a communal cupboard or an external box, and the supply serves more than one flat, so isolation affects neighbours. Older London stock can still carry lead or early steel gas pipe on the internal run, which changes the repair from a joint to a section replacement.

Where we work in London

Wherever you are in the list below, the price is the same. Open your area for what tends to go wrong there.

EdmontonSouthgatePalmers GreenEdgwareFulhamKensingtonChelseaChiswickEalingHammersmithIslingtonCamden All London areas →

Smell of gas in London, your questions

Why call 0800 111 999 before you?
Because they're the statutory emergency service: they attend free, isolate the supply and make the property safe. What they don't do is repair, they cap the supply and leave you needing a Gas Safe engineer. That second call is us.
The emergency service capped my meter, now what?
We find the leak, repair it, test the whole installation and issue the paperwork that lets the supply be reinstated. Usually one visit.
My CO alarm went off but I smell nothing, real?
Treat it as real. CO is odourless; the alarm is the only warning you get. Out, ventilate, 0800 111 999, and don't re-occupy until the appliance that caused it is found.
Are you qualified for gas work?
Every engineer who touches gas is Gas Safe registered and carries the ID card. Check our number on the register, it takes thirty seconds and we'd rather you did.
Do you have an emergency gas engineer available at night?
Yes. Our Gas Safe engineers are on shift 24 hours a day, at the same rate day or night, with no call-out fee. If you can smell gas, call 0800 111 999 first. Once the gas has been made safe, call us to find and repair the fault.

Gas Leak? Call.

Tell us what is happening and where. You get a time and a price before anyone sets off.

020 3674 8514

Or WhatsApp 07865 292684