Plumbing Services
Across London —
Diagnosed, Not Patched.
Leak repair, tap and mixer installs, cold water storage tanks, booster pumps, isolation valves, waste pipework and refurb first-fix and second-fix plumbing — carried out by a Gas Safe registered engineer who thinks about the whole system, not just the drip in front of him.
Plumbing carried out by a heating engineer.
Most 'plumbing' calls are actually system calls. A dripping tap is often a failed isolation valve upstream. A slow-filling bath is often a scaled cylinder coil. A leaking radiator valve is often a symptom of pressure drop across the whole system. Chelsea Plumbing & Heating Co. handles day-to-day plumbing work, but from the perspective of an engineer who understands the heating and hot-water system it's connected to.
That covers leak diagnosis and repair, kitchen and basin tap installs, bath and shower mixers, isolation and shut-off valves, cold water storage tanks (installation, replacement and removal), booster pump installation, waste and drainage re-routing, and general first-fix and second-fix plumbing on refurb projects.
Suits homeowners with a small leak they want fixed properly (not taped up), landlords with recurring drips in let properties, and refurb clients who need heating-aware plumbing coordinated with their builder, kitchen fitter and electrician.
Owner-led by Ian Fisher — Gas Safe registered (952303), G3-qualified for unvented cylinders, many years in the trade. Same engineer scopes it, fits it, and stands behind it.
The cost of the wrong plumber turning up first.
The classic mistake is patching a leak instead of diagnosing it. A dripping compression joint on a floor void that keeps returning gets 'tightened up' three times before someone realises the olive was reused and the joint needs cutting out and remaking. Two of those callouts are wasted money.
The second is under-specced isolation. A fixture without a nearby isolation valve turns a five-minute cartridge change into a mains-off, whole-flat emergency. Every good refurb includes isolation valves at every fixture — every bad one skips them to save £8 per valve.
The third is DIY unvented cylinder work. G3 is a legal requirement — an unvented cylinder installed or repaired without it is a Building Regulations breach and every buildings insurer treats it as grounds to void a claim. The cost of the 'saving' shows up on the day something fails.
- ×Reusing compression olives on a joint that's already leaked — it will leak again.
- ×Chrome pipework fitted with over-tightened compression — plating cracks and water finds the crack.
- ×Fitting a mixer tap to mains pressure and hot-water storage without a check valve — cross-flow contaminates the storage.
- ×Skipping isolation valves at fixtures to save £8 apiece — costs £150 on the next emergency callout.
- ×Cold water tanks refilled with rubble under the platform — bearing weight is on a rotten board, not the joists.
- ×DIY unvented cylinder replacement — legally requires G3 qualification and voids buildings insurance if done without it.
A methodical system,
not a rushed callout.
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01DiagnoseLeak or fault isolated, cause identified before anything is stripped or cut. Written quote given up front.
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02IsolateCorrect isolation used — valve, freeze kit or full drain-down chosen for the minimum disruption to the rest of the property.
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03Repair or installCorrect jointing method for the location: soldered, press-fit, compression or push-fit where each is appropriate.
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04TestSystem re-pressurised, joints and hot-water outlets flow-tested, no drips signed off.
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05Guarantee12-month workmanship guarantee in writing. Site left clean, waste and packaging taken away.
Concrete outcomes,
not vague promises.
Diagnosed, not patched
Every leak call starts with finding the cause — no 'we'll see if that holds' compression tape jobs.
Heating-aware plumbing
Plumbing decisions made with the boiler, cylinder and system pressure in mind — no fixes that break something else.
G3 unvented qualified
Legally qualified for unvented cylinder installation and repair — the qualification your buildings insurer wants to see.
Refurb coordination
First-fix and second-fix plumbing coordinated with builders, kitchen fitters, tilers and electricians on refurb projects.
Chrome & designer pipework
Chrome, brass and satin finishes fitted properly — press-fit or soldered where compression would risk plating cracks.
One engineer, whole visit
Ian on the tools from arrival to sign-off — same person quoting, fitting and guaranteeing the work.
Photographs from
actual jobs.
Real installations, repairs and diagnostics carried out by Ian across London and the Home Counties. No stock photography.
Plumbing work we cover.
Day-to-day and project-scale plumbing across London properties. Everything below is carried out by a Gas Safe registered engineer with G3 qualification and many years of trade experience.
Leak diagnosis and repair
Pinhole leaks on radiator valves, compression joints, soldered joints, buried pipework, auto-air-vents and cold water tanks diagnosed and repaired — cause-first, not patch-first.
Taps, mixers and outlets
Kitchen mixers, basin taps, bath taps and shower mixers supplied and fitted, including flow-rate matching to your available mains pressure and check-valve fitting where required.
Cold water storage tanks
Loft cold water storage tanks installed, replaced, upgraded, jacketed, byelaw-30 compliant fitted with proper platform, overflow and screened vent.
Water booster pumps
Grundfos and Salamander booster pumps installed and commissioned where mains pressure is inadequate for a large property or a high-flow shower installation.
Isolation valves & shut-offs
Isolation valves fitted at every fixture — the small upgrade that saves you calling out an emergency plumber the next time a tap fails.
Waste and drainage plumbing
Waste pipework re-routing, trap replacement, condensate discharge relocation and general drainage work associated with kitchen and bathroom projects.
First-fix refurb plumbing
Rough-in during carcass stage — hot and cold runs, waste, condensate, radiator drops and shower valve backplates set in the walls before tiling.
Second-fix refurb plumbing
Final fit-out once tiling and units are in — taps, mixers, wastes, radiators, valves, isolation cocks and commissioning of the finished installation.
Emergency leak cover
Out-of-hours cover for active leaks at £150/hr — mains isolation, containment, and made-safe repair to get the property watertight through the night.
Do you charge for a diagnosis visit?
Yes — diagnosis and quote is chargeable at the standard hourly rate. If you go ahead with the recommended work the diagnosis charge is deducted from the job total.
How much does a leak repair cost?
Most single-joint leaks are completed within an hour at £90/hr plus materials. Bigger leaks or buried pipework are priced in writing before any work starts.
Can you fit taps and mixers I've bought myself?
Yes — supplied-only fittings from UK retailers are welcome. We'll flag any obvious quality or compatibility issue before we start.
Do you install cold water storage tanks?
Yes — installation, replacement, jacketing and byelaw-30 upgrades all handled. Old tanks removed and disposed of.
Do you install unvented hot-water cylinders?
Yes — see the dedicated Hot Water Cylinders page. Ian is G3-qualified; unvented cylinder work is legally restricted to G3-qualified engineers.
Do you cover emergency leaks?
Yes — out-of-hours emergency cover for active leaks is available at £150/hr. Call 07801 550790 for immediate availability.
Can you handle a full bathroom or kitchen plumbing package?
Yes — first-fix during carcass/build stage and second-fix on completion, coordinated with your builder, tiler and electrician.
What guarantee do I get?
12-month workmanship guarantee in writing on every plumbing job. New fittings carry the manufacturer's warranty on top.
Which areas do you cover?
Greater London and the surrounding Home Counties — Kent, Surrey, Essex, Hertfordshire, Buckinghamshire, Berkshire, Bedfordshire, Middlesex and West Sussex.
Fixed price. Gas Safe.
12-month guarantee.
Free estimates from Ian directly — no call centre, no subcontractors, no surprise bills. One point of contact from first call to twelve-month follow-up.