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Kitchen plumbing in London costs £50 to £300 for most jobs: £75 to £150 in labour to fit your own mixer tap, £80 to £300 supplied and fitted, and £50 to £90 to clear a blocked sink. Anything charged by the hour, such as a dishwasher or washing machine connection, is £86 to £140 for the first hour.
| Job | London low | London typical | London high | UK typical | What moves the price |
|---|---|---|---|---|---|
| Kitchen mixer tap, labour only, you supply the tap | £75 | £110 | £150 | £80 | UK like-for-like about £50 for an hour's work; £100 to £200 if new supply lines or isolation valves are needed |
| Kitchen mixer tap, supplied and fitted | £80 | £150 | £300 | £110 | Pillar, mixer and monobloc taps are cheaper to fit than wall-mounted or sensor taps, £150 to £300 in labour |
| Blocked kitchen sink, cleared from inside | £50 | £70 | £90 | Outside London £30 to £75; fats, oils and grease are the usual cause | |
| Plumber's first hour, weekday (appliance connections and small jobs) | £86 | £105 | £140 | £75 | One firm starts at £85.50 plus VAT with a one-hour minimum; UK call-out about £75 |
| Each hour after the first | £55 | £85 | £95 | £60 | Outer boroughs cheapest, central dearest; parts marked up 10 to 15 per cent, at some firms 25 to 50 |
| Evening or weekend first hour | £113 | £113 | £131 | From £112.50 plus VAT at one firm; UK guides put weekend work at up to 20 per cent more |
Fitting a mixer tap you have bought is £75 to £150 in labour in London, against about £50 for a like-for-like swap elsewhere, or £100 to £200 where new supply lines or isolation valves are needed; supplied and fitted it is £80 to £300, where a UK kitchen mixer is about £110. London's water is hard, 266 mg/l of calcium carbonate in 2025, so limescale, stiff taps and failing cartridges are routine; a cartridge costs £5 to £30 and takes 30 to 60 minutes to change.
Sinks and appliances are charged by time; none of the guides we checked publishes a fixed price for them. One firm charges from £85.50 plus VAT for the first hour, then in half hours, and adds nothing for parking, fuel, the Congestion Charge or ULEZ; across the boroughs the first hour is £86 to £140 and each hour after £55 to £95. A blocked sink cleared from inside is £50 to £90 against £30 to £75 elsewhere.
Under the Water Fittings Regulations the plumber must notify the water supplier before most work; a WaterSafe-approved plumber can self-certify some work and issue a Certificate of Compliance.
Prices last checked: September 2026. Based on MyJobQuote's August and September 2026 tap and plumber rate guides, Fantastic Services' 2026 tap installation and drain unblocking guides with their London figures, the published 2026 rate card of one London plumbing firm and a May 2026 borough-by-borough comparison of London call-out fees. PROS AI does not yet have enough completed kitchen plumbing jobs in London to publish its own averages.
£50 to £300 for most jobs. Fitting a mixer tap you supply is £75 to £150 in labour, £80 to £300 supplied and fitted, and a blocked sink cleared from inside is £50 to £90. A dishwasher or washing machine connection, or a new sink, is charged by the hour: £86 to £140 for the first hour and £55 to £95 for each hour after, with parts marked up 10 to 15 per cent.
£75 to £150 in labour if you buy the tap, which compares with about £50 for a like-for-like swap in the rest of the UK, or £100 to £200 where new supply lines or isolation valves are needed. Supplied and fitted, £80 to £300 against a UK figure of about £110 for a kitchen mixer. Wall-mounted and sensor taps cost £150 to £300 in labour.
None of the guides we checked publishes a fixed price, so expect the plumber's time rate: £86 to £140 for the first hour, which one firm charges as a one-hour minimum from £85.50 plus VAT, then £55 to £95 an hour, cheapest in the outer boroughs and dearest in the City, Westminster and Kensington and Chelsea. Any fittings are marked up 10 to 15 per cent as standard, 25 to 50 at some firms.
Often limescale. Thames Water's supply measured 266 mg/l of calcium carbonate in 2025, hard enough to stiffen taps and wear out cartridges. A replacement cartridge is £5 to £30 and takes 30 to 60 minutes; UK guides price the job at £30 to £80, and London plumbers with a one-hour minimum charge their first-hour rate of £86 to £140.
The plumber does. Under the Water Fittings Regulations a plumber must notify the water supplier before most work on the supply pipework, and a WaterSafe-approved plumber can self-certify some jobs instead and issue a Certificate of Compliance, which is worth keeping with the house papers. Ask the plumber which applies before the work starts.
Written by Shay Hazan, PROS AI.
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