β˜…β˜…β˜…β˜…β˜… 4.9 out of 5 Β· 200+ reviews

What customers think

Google, Checkatrade, and word of mouth. Here's what people actually say.

Emergency Plumbing
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"Called at 11pm on a Friday after a pipe burst under our kitchen sink. Mark arrived at 12:30am. Had it fixed by 1:45am. I was expecting a massive bill β€” it was completely reasonable. Couldn't believe it. This is who you want on speed dial."
JC
James C. Clapham
Boiler Repair
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"Boiler kept cutting out β€” three engineers before Harris couldn't figure it out. Mark diagnosed it in 40 minutes. Turned out to be a faulty pressure sensor that the others had missed. Fixed for Β£180 rather than the replacement boiler I was being pushed towards. Lifesaver."
AN
Amanda N. Wimbledon
Leak Detection
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"Damp patch on the living room ceiling that had been there for months. The last company I called said they'd need to open up a big section of the wall to find it. Harris used a thermal camera, found it in the airing cupboard, and the access hole was the size of a letterbox. Perfect."
PF
Paul F. Richmond
Bathroom Installation
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"We had a very specific vision for the bathroom β€” wet room, linear drain, large format tiles. Mark said he'd done it before and he genuinely had. The finish is as good as anything I've seen in a showroom. Took exactly the time quoted and the price didn't budge."
HT
Helen T. Putney
Drain Unblocking
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"Our kitchen drain had been backing up for a week. Called Harris and they were here the next morning. Cleared it in under an hour, showed me the CCTV footage of the blockage (hair and grease, apparently), and explained how to prevent it. Quick, professional, no mess."
RG
Rachel G. Tooting
Boiler Installation
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"Old boiler finally gave up. Mark came round, assessed the system, gave me three options at different price points and explained the pros and cons of each. No pressure. Went with his recommendation. New Worcester Bosch installed in one day. Brilliant throughout."
GS
Graham S. Surbiton
Leak Detection
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"Noticed our water meter was spinning when nothing was on β€” classic sign of a hidden leak. Harris found it under the patio. Repaired it the same visit. The whole thing would have cost a fortune in damage if we'd left it. Really glad we called early."
MC
Mike C. Kingston
General Plumbing
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"I've used Harris for three separate jobs now β€” a leaking toilet, a new radiator in the loft conversion, and a kitchen tap replacement. Every time, same story: on time, does the job, tells you the price first, leaves it clean. That's genuinely rare and worth writing about."
KM
Karen M. Balham

A few jobs worth describing.

The kind of detail that matters if you're deciding whether to call.

Bathroom Refit Β· Streatham

Victorian terrace, original plumbing

Full strip-out and refurbishment of a bathroom in a 1930s terrace with original cast iron pipes and no proper shower.

Before
Avocado suite, cast iron bath, no shower, pipework from original build with multiple patches. Cold spots on floor suggested subfloor leak.
After
New combi-fed thermostatic shower, freestanding bath, full retile, and updated supply and waste pipework. Subfloor leak repaired before tiling.
Leak Detection & Repair Β· Putney

Concealed leak behind kitchen wall

Owner noticed higher water bills over three months. No visible signs of moisture but water meter confirmed ongoing loss.

Before
Slow but constant water loss from an unknown source. Meter spinning with all taps off. Previous plumber had recommended opening a large section of the kitchen wall.
After
Thermal imaging located the pinhole leak in a 15mm copper pipe behind the kickboard. Access hole cut precisely. Pipe section replaced. Wall repaired. Job done in under 3 hours.
Boiler Replacement Β· Kingston

Aging back boiler to modern combi

A back boiler behind a gas fire that had been limping along for years. Parts were no longer available.

Before
20-year-old back boiler with failing heat exchanger. Hot water inconsistent. Gas fire no longer functional. System running at well below rated efficiency.
After
Back boiler and fire removed. New Vaillant combi installed in airing cupboard. Full power flush of existing system. Boiler now delivering consistent hot water and saving an estimated Β£300/year in gas.

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