★★★★★ 4.9/5 · 500+ reviews
The National Drainage Company clears blocked drains, toilets, sinks and sewers across all 32 London boroughs and the City, 24/7. We aim to reach most London jobs within 60 minutes, with the price agreed before any work starts.
Most London blockages come down to the same few causes: fat and food waste from kitchens, wet wipes flushed into shared soil stacks in converted flats, and tree roots working into the joints of old clay pipes under Victorian and Edwardian terraces. Large parts of inner London still drain into combined Victorian sewers, so heavy rain can back water up into gullies and basement drains, and shared drains between terraced houses mean one blockage can affect the whole row. We clear blocked drains, toilets, sinks, gullies and manholes in homes, flats and businesses right across the capital — and if the problem is on the public sewer, we'll tell you so you don't pay for work that is Thames Water's responsibility.
Older terraces run on clay pipework that tree roots find and split at the joints.
Kitchens and food businesses keep drains under constant FOG pressure.
Converted flats share soil stacks, so one wipe can back up several homes.
Older surface drains and gullies silt up and struggle in heavy rain.
"Fast, tidy and did exactly what they said. Couldn't fault them."
"Showed me the problem on camera and sorted it properly. No hard sell."
"Reliable and professional — one call and it was handled."
| Area | Approx. response |
|---|---|
| Westminster & the City | ~8 min |
| Camden & Islington | ~12 min |
| Kensington & Chelsea | ~13 min |
| Hackney & Shoreditch | ~16 min |
| Lambeth & Southwark | ~15 min |
| Hammersmith & Fulham | ~18 min |
| Wandsworth & Clapham | ~20 min |
| Greenwich & Lewisham | ~22 min |
| Ealing & Acton | ~26 min |
| Barnet & Finchley | ~28 min |
| Croydon | ~34 min |
| Bromley | ~36 min |
We aim to reach most jobs in London within 60 minutes, 24/7. Call us and we'll confirm an arrival time for your postcode.
We give you a clear price over the phone before we come out, including any call-out charge, so you know exactly what you'll pay before any work starts.
You're normally responsible for the pipes within your property boundary. The shared sewer beyond it is usually Thames Water's. If the blockage is on their network, we'll tell you so you don't pay for work that isn't yours.
Yes — we clear blocked toilets, sinks, baths, showers, outside gullies, manholes and main drains, using rods, high-pressure jetting and CCTV where needed.
Yes — we cover every London borough around the clock, 365 days a year, including nights, weekends and bank holidays.
Yes — as well as homes we look after restaurants, shops, offices, care homes and managing agents throughout London.
Yes — we're fully insured, our engineers are DBS-checked, and we hold recognised industry accreditations including Water Jetting Association membership.
We confirm the drain is flowing freely before we leave, and if a blockage returns because we didn't clear it properly, we'll come back and put it right.
The same team, kit and pre-agreed price promise wherever you are in London — jetting, CCTV and no-dig repair carried on every van.
24/7 local response, pre-agreed price before any work, fully insured.
📞 Call now: 0800 246 5157
