Blocked drains in London, cleared by FS Group engineers, from toilets and sinks to outside gullies and main runs. Ring the help desk for drain unblocking and we book an engineer to your door.
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FS Group has cleared blocked drains in London since 1998. We are a family business, and drainage is where it began.
A blocked drain is a sign of something else. Fat has set on the pipe wall, a root has found a joint or a length has sunk. So the engineer clears the line, then finds the reason. You get photos and a written report.
Why drains block
London's housing stock has its own habits. These six account for most of the blockages we clear.
Wipes do not break down like toilet paper. They snag on a rough joint and catch everything that follows, even the ones sold as flushable.
Fat poured down the sink sets on the pipe wall as it cools. Layer on layer, the pipe shrinks to a fraction of its size.
Plane trees and garden shrubs push roots into old clay joints looking for water. Once inside they grow into a net that traps paper and debris.
Thousands of London terraces still run on their first clay drains. Joints shift and a settled length holds water. See recurring blocked drains.
Autumn leaves fill gullies and silt washes in from paths. After building work, cement slurry sets hard in the pipe.
Hard water leaves scale that narrows older pipes. A trap that has dried out lets smells back in and is often mistaken for a blockage.
Mitch came out and sorted a very nasty blockage in under 30 minutes. Awesome service. Thank you
Superb company. Good communication, unblocked my drain quickly and explained the problem clearly. The price was very reasonable as well.
I would highly recommend FS because they are always so helpful and incredibly efficient. They can normally get someone out to me the next day if not that very same day. Rob and JJ came out to sort a blocked sink and were brilliant. They were really friendly, informative and just all around good guys. Everything got sorted and they had advice on how to help avoid the problem in the future. I just really appreciated that they took the time to talk to me and explain everything in detail. The people I speak to at the office are always great too, they are polite, friendly and helpful.
Mitch turned up, listened carefully to what I said, and quickly analysed the problem. He explained his method and set about clearing a blockage from an external pipe, and was all done in 15 minutes. Happy to pay his fee and would recommend his services to friends.
Perfect service, appointment was arranged super quickly and the drain was unblocked within 20mins. Very friendly and he explained how to unblock the drain channel ourselves next time to save us money. Superb service, highly recommended.
Smooth and efficient service from both the office and the drain operator James who sorted the drain blockage with the high pressure jet effectively and quickly
James was very helpful. Quickly unblocked the Insinkerator pipes (where two others had failed) explained the situation, showed me the issue and suggested follow-up action. Thank you James!
Rob was very helpful and efficient. Unblock my kitchen drainage really quickly. Highly recommend
On the day
Most visits follow the same four steps, whichever method the blockage needs.
The engineer rings ahead, so you know when to expect them.
They lift the covers and run water from each fitting to see where it stops.
The lightest method that works clears it. Water is run through to prove the line flows.
Before leaving, you get photos and a written report. If it is likely to block again, the report says why.
Clearing a simple blockage is often not covered, but damage to the pipe often is. Our photos and job report support a claim.
Drain ownership
Who pays depends on where the blockage sits. Our guide on how to tell if your drain is shared walks through it.
Where we work
Pick your area for local drain unblocking, with the postcodes we cover and reviews from nearby streets.
Outside London, we cover Essex, Hertfordshire and Kent. Ring with your postcode to check.
