Toilet Repair London
Running cistern, broken flush, leak at the base, or a toilet that just won't work — our Gas Safe engineers fix all toilet problems across London, same day. Fixed prices, no hidden charges.
Common Toilet Faults — Diagnosed & Fixed
Nearly all toilet problems fall into one of these six categories. We stock the most common replacement parts — cistern internals, siphon diaphragms, fill valves, flush valves — so most jobs are completed in a single visit.
Running / Phantom Flush
Cause: Worn cistern flap or misadjusted float
Fix: Replace flap valve or adjust float arm
£85–£95
Won't Flush
Cause: Broken siphon, stuck button, or empty cistern
Fix: Siphon / flush valve replacement
£85–£110
Leak at Base
Cause: Failed pan connector seal or cracked pan
Fix: New seal or pan connector; pan replacement if cracked
£110–£180
Cistern Fills Slowly
Cause: Blocked or failing fill valve / ballcock
Fix: Fill valve replacement
£85–£100
Leak from Cistern Bolts
Cause: Deteriorated rubber washers on close-couple bolts
Fix: Washer replacement (drain and refit cistern)
£95–£120
Partial Flush Only
Cause: Low water level in cistern or worn diaphragm
Fix: Adjust float / replace diaphragm
£85–£95
Toilet Repair Prices — London 2026
| Job | Typical Time | Price (parts + labour) |
|---|---|---|
| Flush mechanism repair (siphon / flap) | 30–60 min | £85–£110 |
| Fill valve / ballcock replacement | 30–45 min | £85–£100 |
| Running toilet — cistern overhaul | 45–60 min | £95–£125 |
| Toilet leaking at base — re-seal | 45–90 min | £110–£150 |
| Cistern bolt washers | 45–60 min | £95–£120 |
| Full toilet replacement (supply + fit) | 2–3 hrs | £250–£400 |
| Saniflo / macerator repair | 1–2 hrs | £120–£180 |
| Emergency call-out (nights / weekends) | Same day | No extra charge |
All prices include parts and labour. Fixed quote given before work starts. No call-out fee — 7 days a week including Bank Holidays.
Every Toilet Type We Service
From Victorian high-level pull-chain cisterns in Islington period conversions to wall-hung concealed cistern units in new-build City flats, we've seen every type of toilet installed in London.
| Type | Common in | Common Fault |
|---|---|---|
| Close-coupled (ceramic tank sits on bowl) | Most UK homes | Cistern flap / fill valve |
| Back-to-wall / wall-hung | Modern flats, renovated bathrooms | Concealed flush mechanism |
| High-level chain pull | Victorian / Edwardian properties | Siphon, chain, ballcock |
| Low-level (separate cistern, low pipe) | 1950s–80s homes | Siphon / connector pipe |
| Saniflo / macerator | Basement conversions, extensions | Motor, rubber seal, blockage |
| Smart / bidet combo | New premium builds | Electronic flush valve, seat |
We Cover All London Boroughs
Engineers based across North, South, East, and West London — average response time under 60 minutes to anywhere inside the M25.
Toilet Repair FAQs
How much does toilet repair cost in London?
Most toilet repairs in London cost £85–£150. A simple flush valve replacement is typically £85–£95, cistern internals (fill valve, siphon, flap) £95–£120, and a toilet leaking at the base £110–£150. Full toilet replacement including labour starts from £250. We provide fixed quotes before starting work.
Why is my toilet constantly running?
A constantly running toilet is almost always caused by a faulty fill valve, worn cistern flap/flapper, or a float arm set too high. The water trickles into the bowl because the cistern never reaches full pressure to cut off. It wastes up to 400 litres per day — fix it quickly to avoid inflated Thames Water bills.
Why is my toilet leaking at the base?
A leak at the toilet base usually means the wax or foam seal (pan connector / close-couple gasket) between the toilet bowl and the floor drain has failed. It can also indicate a cracked pan. This is a health hazard as waste water seeps out — call a plumber promptly. We can normally seal or replace the connector same day.
Can you repair a toilet that won't flush?
Yes. A toilet that won't flush is usually a broken flush handle, snapped siphon diaphragm, jammed button mechanism, or an empty cistern (due to a faulty fill valve). Most flush mechanism repairs take under an hour and cost £85–£110 including parts.
Is it worth repairing a toilet or replacing it?
Repair is nearly always cheaper and faster. If the porcelain is cracked, the toilet is over 20 years old with multiple faults, or it's an older high-level chain-pull design you want to modernise, replacement makes sense. We'll diagnose on arrival and give you an honest recommendation — no upselling.
Do you repair Saniflo macerator toilets?
Yes. We repair Saniflo and other macerator toilets — blocked macerators, motor failures, rubber seal replacements, and pressure issues. Macerator repair typically costs £120–£180 depending on the fault. We carry common Saniflo parts.
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Toilet Problem? We'll Fix It Today.
No call-out fee · Fixed quotes · Same-day across London
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