Domestic Gas Pipework
Gas Leak Repair and Gas Pipework in London
We repair and alter domestic gas pipework for London homeowners and rented homes, with leak repairs arranged only after the emergency service has made the supply safe. Smell gas or suspect a leak? Leave and call the National Gas Emergency Service on 0800 111 999 from a safe place first. All Service 4 U provides Gas Safe registered engineers for assessed pipework repairs and planned alterations, with a phone line answered 24/7.
Call with your postcode, the boiler make and any fault code showing.
- Gas Safe registered: 648977
- Phone line open 24/7
- Same-day appointments available
Smell Gas or Suspect a Leaking Gas Pipe? Call 0800 111 999 First
If you smell gas or suspect a leaking gas pipe, leave and call 0800 111 999 from a safe place immediately.
- Get outside and keep away from the suspected escape.
- Avoid flames, smoking and operating electrical switches.
- Open doors or windows and turn off gas at the meter only if safe, without delaying your exit or emergency call.
- Follow the emergency service’s instructions. Do not search for the leak or attempt a repair.
Carbon monoxide has no smell. Treat a sounding CO alarm as real and get into fresh air. If you suspect CO symptoms, seek medical help through NHS 111, or call 999 for serious symptoms. Do not delay medical help to arrange a gas repair.
Read What should I do if I smell gas? for further emergency guidance.
Once the supply has been made safe, call 020 3740 6785 about repairs by Gas Safe registered engineers.
After the Emergency Service Has Made the Supply Safe: What Happens Next?
After the emergency service has made the supply safe, a suitably qualified Gas Safe registered engineer can assess the affected installation pipework or appliance for repair. Making safe may leave the gas off; it does not mean the installation is ready to use.
Share the emergency handover
Give the repair engineer any report or warning notice already supplied. This explains what was identified and what remains isolated.
Assess the affected installation
The engineer investigates the reported problem and establishes the pipework, appliance and access involved. Further assessment may be needed before defining the repair.
Establish the repair scope
Ask the engineer to explain the proposed repair or replacement, including access requirements and any work another party must arrange, before agreeing to proceed.
Complete checks and explain the outcome
Applicable checks, including gas tightness testing, form part of the work. The engineer must explain whether the installation can return to use or anything must remain isolated.
For a planned alteration with no suspected leak, start with an assessment of the proposed change. Never restore an isolated supply yourself.
Gas Pipework Repairs, Replacement and Alterations
Gas pipework repairs, replacement and alterations address the installation pipes supplying gas appliances, with the work determined by an on-site assessment. Our scope covers domestic natural gas pipework.
These pipes carry gas, unlike radiator and heating pipes carrying water. For those water-carrying pipes, see central heating pipework repairs.
Copper Gas Pipework and Fittings
Copper gas pipework and fittings need assessment against appliance demand, the pipe route and installation conditions. A matching fitting or visible pipe diameter does not establish suitability.
The engineer considers:
- The appliances supplied and their requirements.
- The route and existing installation.
- The condition and suitability of the pipework and fittings.
If you are asking about 8mm copper gas pipe, treat that as a sizing question for the engineer. Do not select or fit a replacement yourself.
External, Underground and Concealed Gas Pipes
External, underground and concealed gas pipes need their route and responsibility established before work is planned.
- Outside: An incoming service pipe and installation pipework have different responsibilities. A pipe entering the house needs identification before its repair route is clear.
- Underground: Buried pipework requires assessment of responsibility and access. Excavation is not automatically included in a pipework enquiry.
- Concealed: Pipes beneath concrete or behind finishes can involve separate opening-up and reinstatement work.
Describe what you already know when calling. Do not dig, chase walls or expose pipes yourself.
Existing Lead Gas Pipework: Assessment Before Alteration
Existing lead gas pipework needs qualified assessment before any repair or alteration is proposed. The engineer establishes the material, condition and affected work before recommending an approach under the applicable requirements. Age alone does not establish the condition of a particular installation. Do not bend, cut or reconnect an old pipe.
Pipework for a Gas Cooker or Hob
A gas cooker or hob installation may require existing gas pipework to be assessed or altered. Supply-pipe work is one part of the complete appliance job, which needs its own checks against the appliance instructions. For the full job,.
Pipework Serving a Gas Fire
Gas pipework serving a fire is one part of the wider appliance assessment. Repairing the supply pipe does not establish that the fire, flue and ventilation are suitable for use. The complete appliance service is covered by.
Gas Meter Move: Who Arranges the Work?
A gas meter move needs coordination with the relevant supplier and network operator; it is separate from our installation-pipework repair service.
Incoming service pipe
Ask the network operator about changes to its pipework and the proposed route.
Meter arrangements
Ask your supplier who must arrange the meter work, including a proposed move outside or onto an external wall.
Downstream installation pipework
Establish what separate work a suitably qualified Gas Safe registered engineer needs to assess.
Check who is responsible for each element before agreeing work. Gas Safe registration alone does not establish authority to undertake every part of a meter move. We do not offer meter relocation through this service.
What affects the cost
What Affects a Gas Pipework Repair Quote?
A gas pipework repair quote depends on the fault, access and the work needed to complete the repair safely.
The main factors are:
- How much investigation is needed to locate the fault.
- Whether the affected route is accessible or concealed.
- The extent of repair or replacement.
- Materials and applicable testing.
- Who arranges opening-up and reinstatement.
Ask what the proposed price includes and which work requires a separate arrangement. Call 020 3740 6785 for a price for your job once any suspected leak has been reported and the supply made safe.
Typical London prices
- Gas leak repair or gas pipework: £100-£375 + VAT
Typical London price range, plus VAT at 20%. Your price depends on the boiler, the fault, the parts and when the work is done; ask on the call.
Gas Pipework Repairs Across London
Our London gas pipework service covers assessed domestic repairs and planned alterations for homeowners, tenants and landlords arranging repairs. Give us the property postcode so we can confirm coverage and appointment availability.
Call us 24 hours a day, 7 days a week. Same-day appointments are available, subject to availability for your job and location. See the areas we cover in London.
Check the Gas Safe Registration Behind the Visit
Check the attending engineer’s Gas Safe ID and qualifications for the work before it begins. All Service 4 U’s Gas Safe Register business registration is 648977.
- Check the business registration on the Gas Safe Register.
- Match the attending engineer to the photograph and details on their ID card.
- Check that their listed work categories cover the job you are arranging.
Business registration and the individual engineer’s qualifications are separate checks; both matter when arranging gas work.
Boiler repair, servicing and gas work
Arrange a Gas Pipework Repair or Alteration in London
Arrange a planned alteration or a repair after emergency make-safe work with our Gas Safe registered engineers.
Suspected leak now? Leave and call 0800 111 999 from safety first.
For an appropriate repair enquiry, call 020 3740 6785. Call us 24 hours a day, 7 days a week. Have your postcode, job description and any existing emergency report or warning notice available, or contact us about gas pipework repairs.
020 3740 6785
Frequently Asked Questions
Why Have I Got No Gas Supply?
No gas supply can result from emergency isolation, a meter issue or a network interruption. If you smell gas or suspect a leak, leave and call 0800 111 999 from safety. Otherwise, use existing supplier information and any isolation notice to identify the appropriate contact. No smell does not establish safety; do not reconnect an isolated supply yourself.
How Do I Check for a Gas Leak in My Area or Report a Gas Smell Outside?
Report a suspected area leak or unexplained gas smell outside to the National Gas Emergency Service on 0800 111 999 from a safe place. Move away and follow its advice. Online incident updates cannot confirm your situation is safe, and smell alone cannot identify the source. Do not investigate meter boxes, dig or assume a neighbour has already reported it.
Can I Use a Gas Pipe Repair Kit Myself?
No, do not attempt a gas pipe repair with a DIY kit. A suspected leak needs emergency reporting first: leave and call 0800 111 999 from safety. Subsequent assessment and repair need a suitably qualified Gas Safe registered engineer. Never work on gas, apply a temporary patch or open the boiler casing.
Does Gas Pipework Need Lagging?
Whether gas pipework needs protection depends on the installation, so do not apply water-pipe lagging advice to it. Insulation and other forms of pipe protection serve different purposes. Ask a Gas Safe registered engineer to identify the pipe and assess its requirements, rather than choosing a wrap or material yourself.
What Determines the Cost of Moving a Gas Meter Outside in London?
The cost depends on the supplier or network operator’s assessed scope and any separately required installation-pipework work. Ask how the proposed position, pipe route, excavation, reinstatement and reconnection affect the quotation. Establish which party covers each element before agreeing work. Our pipework repair service does not provide a meter-moving price or booking offer.
Can I Use a Boiler Labelled Unsafe After a Gas Pipe Repair?
Do not use a boiler labelled unsafe until the relevant faults have been addressed and a suitably qualified engineer has confirmed it can be used. The pipework repair and appliance fault may be separate matters. Keep the warning notice for the engineer, and do not restore the supply or remove warning labels yourself.
Still have a question or need urgent assistance? Call 020 3740 6785, tell us what has happened and we will tell you what happens next.