London plumbing service

Plumber in London for Homes, Lets and Businesses

Leaking pipes, dripping taps, noisy heating or a new suite to fit: G&B Gas Safe sends a local plumber who explains the fault and prices the job in writing first.

Plumber

What London customers say about our plumbers

Customer reviews

Excellent

Rated by customers across London

  • Water was pooling under the kitchen units and I had no idea where it was coming from. Found a split compression joint behind the dishwasher, replaced it and left the cupboard base drying out. Clear about the cost before touching anything.
    Nadia R.Kitchen leak, Islington flat
  • Annual service on an older Vaillant. Took the time to show me the flue reading and explained the pressure had been creeping down. Topped it up, fixed a weeping valve and wrote it all on the report.
    James T.Boiler service, Fulham
  • I manage two lets in the same building and needed both certificates renewed. They dealt with the tenants directly for access, and the records came through by email for my files.
    Olu A.CP12 for two flats
  • Outside drain kept overflowing every time it rained. Rodded it, then put a camera down and showed me roots getting in at an old joint. Honest about what needed doing and what could wait.
    Clare H.Blocked gully, Walthamstow

The work in detail

Most plumbing calls in London start with something small: a tap that will not stop dripping, a toilet that keeps refilling, a damp patch under the kitchen sink. Our plumbers deal with all of it, along with the bigger jobs such as replacing old lead or iron runs, moving radiators and fitting new sanitaryware. Around half of the capital's homes were built before 1945, so we expect older fittings, awkward access and pipework that has been altered many times over.

G&B Gas Safe covers the whole city and the towns around it. You get a clear explanation of what is wrong, a written price before any work begins, and gas appliances handled only by Gas Safe registered engineers. If the real problem turns out to be a boiler fault rather than plumbing, we can arrange boiler repairs on the same visit where possible. Use Quick Quote Online to tell us what is happening.

Emergency Plumbing Repairs

A burst pipe under the floorboards or water coming through a ceiling needs action before anything else. The first job is to stop the water: we locate the stopcock (often under the kitchen sink, in a cellar or behind a panel in older terraces), isolate the affected circuit and make the area safe. Then we trace the cause, whether that is a split copper joint, a failed compression fitting or a perished flexible hose.

Where a permanent repair needs parts we do not carry, we fit a temporary fix so you have water and heating back, then return to finish the job. Before we leave you are told what was done and what still needs attention.

Boiler, Heating and Central Heating Work

Plumbing and heating overlap in most London homes. Cold radiators, a pressure gauge that keeps dropping, kettling noises or a boiler showing a fault code can all trace back to the water side of the system. We bleed and balance radiators, replace TRVs and lockshield valves, fix weeping pump valves and repressurise sealed systems that have lost water.

Any work on the gas side of a boiler, cooker or fire is done by Gas Safe registered engineers. That covers combi, system and regular (heat-only) boilers, plus the unvented cylinders that feed many flat conversions. If magnetite sludge is the root cause, we say so and explain the options, including a magnetic filter and fresh inhibitor.

Taps, Toilets, Showers and Pipework

These everyday jobs make up much of a plumber's week, and they are worth doing properly. A dripping tap usually means a worn washer or ceramic cartridge. A toilet that runs constantly often has a failing fill valve or flush valve seal. A weak shower can come down to scale in the head, a sticking mixer cartridge or low pressure at the supply.

  • Tap washers, cartridges and full tap replacement
  • Cistern fill valves, flush valves and close-coupled seals
  • Shower mixers, pumps and valve cartridges
  • Replacing old lead, iron or corroded copper runs

For pipework we use copper or push-fit plastic to suit the location, then clip and lag the runs so they stay quiet and protected from frost.

Flexible tap connectors and a spanner laid over a plumbing plan

Bathroom Fittings and Installations

Some jobs are a single swap: a new basin and pedestal, a replacement toilet pan, a bath panel or a thermostatic shower valve. Others involve moving the waste, rerouting supplies and connecting to a soil stack that dates back a century. We handle both, checking the fall on every waste and testing each joint before a wall or floor is closed up.

If you are planning a full refit rather than swapping individual items, our new bathroom service covers layout, tiling and the complete fit. For smaller changes, a plumber can usually finish in one visit once the parts are on site, leaving the room usable the same evening.

Fixed Pricing, Quotes and No Hidden Fees

You get a written price before we start. It sets out the labour, lists parts separately and notes anything that could change the figure, such as a seized valve or pipework hidden behind tiles. If something unexpected turns up once work is under way, we stop and explain it before any extra cost is added.

What affects the price? Access, the age of the pipework, whether floors or boxing need lifting, and whether parts are standard or need ordering in. The easiest way to start is a Quick Quote Online with a short description of the job and your postcode. We come back to you with the next steps and, once the job is clear, a fixed written price.

Urgent Callouts and Same-Day Attendance

Not every job can wait for a booked slot. When you fill in the Quick Quote form, say it is urgent and describe what is happening: an active leak, no water, no heating, or a toilet out of use in a home with only one. Urgent jobs are prioritised, and same-day attendance is offered where the diary allows.

While you wait, turn off the stopcock if water is escaping, switch off electrics near the leak and move anything valuable out of the way. If you smell gas, leave the property, avoid using switches and call the national gas emergency line. Once the area is safe, we can find and fix the cause.

Domestic and Commercial Plumbing Support

Our domestic plumbing services cover houses, flats and maisonettes of every age, from Victorian terraces with shared soil stacks to post-war estate blocks and recent new-builds. Conversion flats bring their own puzzles: supplies that pass through a neighbour's ceiling, stopcocks in communal cupboards and heating pipes shared between floors.

For commercial clients we look after the plumbing in shops, cafes, offices and small workplaces, including staff toilets, hand-wash basins, water heaters and kitchen wastes. Work can be arranged around opening hours where needed, and we coordinate with managing agents and freeholders when access to plant rooms or risers is controlled by someone else.

Audit Assurance and Job Records

Landlords, managing agents and small commercial clients often need proof of what was done, not just a working tap. Every job ends with a written record: the fault found, the work carried out, the parts fitted and any follow-up we recommend. We photograph completed work, including pipework before it is boxed in, so there is evidence of the finished installation.

Where a job involves gas, the relevant compliance paperwork and certificates are handed over on completion. Together these records give you audit assurance when a tenant queries a repair, a freeholder asks for evidence or an inspector wants to see what was fitted and when.

How it works

How a plumbing job runs

Four stages from your first message to a finished, tested repair.

Step 1 of 4

Describe the problem

Use Quick Quote Online to tell us what is leaking, broken or needs fitting, with your postcode and how urgent it is.

Flexible hoses and a spanner laid on a plumbing floor plan

Step 2 of 4

Diagnosis on site

The plumber checks the fault, isolates the water if needed and explains the cause in plain terms.

Engineer checking a wall thermostat in a hallway

Step 3 of 4

Written price agreed

You receive labour and parts costs in writing and decide whether to go ahead.

A row of spanners laid out on a timber bench

Step 4 of 4

Repair and record

The work is completed and tested for leaks, then written up with photos of the finished job.

A finished tiled shower with a black-framed screen

Need a plumber in London?

Tell us what is happening and get a Quick Quote Online. Urgent jobs are prioritised.

Quick Quote Online

Areas we cover

Plumbing across London and nearby towns

Our plumbers work right across London, from mansion blocks in Westminster to Victorian terraces in Islington and Holloway, and out to interwar semis in Harrow and Croydon. The mix matters. A basement flat in Fulham often has a very different supply route from a 1930s house in Finchley, and older homes frequently hide lead or iron sections behind later copper. We plan each visit with the building in mind, so the right fittings are already in the van when we arrive.

  • London
  • City of Westminster
  • Islington
  • Chelsea
  • Battersea
  • Holloway
  • Brixton
  • Peckham
  • Fulham
  • Archway
  • Shepherds Bush
  • Canary Wharf
  • Stamford Hill
  • Willesden
Row of Victorian terraced houses on a London street

See every area we cover

Related work

Jobs that often go with this one

  • Emergency Plumber

    Emergency Plumber

    Burst pipes, water through the ceiling, no hot water. Urgent jobs go to the front of the diary.

  • Leak Detection

    Leak Detection

    Hidden leaks found with thermal, acoustic and tracer gas kit, opening up as little as possible.

  • Boiler Repair

    Boiler Repair

    Lockouts, fault codes, pressure loss and no hot water diagnosed and put right.

Questions

Plumber: your questions

Painted period townhouses in London

What kind of jobs does a local plumber take on?

Everything from a dripping tap or running cistern to replacing old supply pipes, moving radiators, fitting shower valves and connecting washing machines and dishwashers. We also repair leaks, clear blocked wastes and fit sanitaryware. If a job needs a gas engineer, such as work on a boiler or cooker, it is handled by a Gas Safe registered engineer rather than a general plumber.

Do your plumbers work on gas appliances?

Gas work in the UK must be carried out by a Gas Safe registered engineer, and that is how we do it. Our plumbers handle the water side of heating and hot water systems, while boilers, gas hobs, fires and gas pipework are dealt with by registered engineers. You book one job with us and we send the right person for each part of it.

Can you replace old lead or iron water pipes?

Yes. Lead supply pipes are still found in many pre-1945 London homes, often running from the stopcock into the kitchen. We replace them with copper or plastic, fit a new stopcock where the old one is seized, and reconnect every outlet. Replacing the external supply pipe up to your boundary can also be arranged, subject to access.

Will I know the price before you start?

You will. Once we understand the job, you receive a written price that shows labour and parts separately. If we uncover something that changes the scope, such as a corroded joint behind a panel, we stop, explain it and confirm any change in writing before carrying on. The final invoice matches what you agreed.

Do you offer plumbing services for landlords with several properties?

We do. Landlords and managing agents can report jobs through Quick Quote Online and receive a written record for each property, with photos of completed work and any certificates. That makes it easier to answer tenant queries, keep compliance files up to date and see the history of repairs across a portfolio.

Quick Quote Online

Get a Quick Quote from a London plumber

Tell us about the job, the type of property and your postcode. We reply with the next steps and a written price.

  • A written price before any work starts
  • Gas work by Gas Safe registered engineers
  • Plumbing, heating, drains and bathrooms under one roof
  • London and the towns around it

Rated by customers across London

Engineer checking the internals of a wall-mounted boiler

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