Blocked drain in London? Get it unblocked FAST!

We are available to clear blocked drains 24/7 in London so no matter when, give us a call! We provide each Happy Drains customer with the best service and at the best value price. Get your London drain unblocked FASTcustomers come first at Happy Drains!

Domestic drain unblock
Best value and service guaranteed
No extra charge for jetting
Call William or David for great advice!
020 7870 3205 or 07824 757572

Drainage challenges in London? — Happy Drains are ready to help restore flow at your business premises. Great value for money is our top priority, and we aim to provide all London business customers with extraordinary service at the best prices. So whatever the type of blockage, call us!

Commercial drain unblock
Call William or David for best price!
020 7870 3205 or 07824 757572
Unblocks include jetting
Which Trusted Trader
Proud members of Checkatrade
5650 reviews
9.79 out of 10

Reviews are a most critical tool, negative or positive they help us understand how we are doing in London. They give you an insight about whether you should be employing that company in London. Consider our reviews and then you can make up your mind who to trust and why.

Trust Happy Drains
* Terms: The drain to be unblocked must serve your house or flat exclusively, be fully accessible (per building regulations), have the appropriate inspection chamber or access point and pipework that has not failed. You have permissions to enter relevant access areas unhindered.

London Blocked Drain Clearance, CCTV Surveys & Repair

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London drain unblocking

London drain unblock priceWith thousands of rave reviews from satisfied customers, look no further than Happy Drains for all your London area drainage needs. Whether in London or the home counties, our network of engineers will get to you FAST.

Our engineers receive regular training to ensure we deliver to you the very best service. Experience and skill plus investment in the best equipment and latest technology helps us to to get your drains fixed good and fixed fast, simply the most highly rated drain and sewer services in the London area. 

How much does it cost to clear a London blocked drain?

Best value and service guaranteed for a London residential dwelling private drain unblock during normal working time. Our price includes jetting, unlike some London drain companies who'll try rods first then charge you extra for jetting.

Blocks of flats and commercial properties depend on complexities.

Please call us for a no-obligation quotation.

You may find lower prices elsewhere, but many London drainage firms will pile on the extras.If it sounds too good to be true it is!If you're comparing prices, make sure you get a fixed price including jetting as some London drain companies charge extra for jetting which we think is wrong. 

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07824 757572

How long does it take to clear a London blocked drain?

How long does it take to clear a London blocked drainThe average London domestic blockage is fat and grease based. To unblock this type of job takes roughly 1-2 hours. Unblocking usually involves rodding or a snake to remove the blockage. For more stubborn blockages high pressure jetting may be the only option.

Best value and service guaranteed for a London residential dwelling during normal working time. Our price includes jetting, unlike some competitors who'll try rods first then charge you extra for jetting.

Who's the best drain company in London?

Who’s the best drain company in LondonWe'll let you decide that, but just take a look at the reviews that drain clearing companies receive from their customers and you'll see that Happy Drains are right up there as a leading provider of drain unblocking and drain repair services.  We have thousands of excellent reviews from very satisfied customers. Here's just a few of them:

Happy Drains are highly rated at Checkatrade!
5650 reviews 9.79 out of 10

Drain / Sewer Clearance

"Initial request via Checkatrade was made and Happy Drains Ltd called me within seconds - I was given a cost and timeslot within 15 mins. The Engineer arrived on time, fixed the issue and left everything tidy - all within just over an hour from initial inquiry. Brilliant - Thanks Happy Drains Ltd :) Everyone I spoke to was friendly and helpful - I can highly recommend the Happy Drains team."

Had a drain unblocked. Great job and very polite.

"Had a drain unblocked. Great job and very polite. Will definitely use again in the future."

Blocked drain

"Happy Drains have been great to deal with all the way through, they were quick, efficient, friendly and tidy. They came to my address, assessed the situation, resolved the problem quickly and efficiently."

Blocked Sewer Drain To Rear Of Property

"Had a blocked drain that was causing water to back up into both ours and our neighbours properties. Called Happy Drains who attended the next day, located the problem and fixed in 15 minutes. Great service at a great price would highly recommend!"

Unblocking outside drain

"Very speedy response and call out. Arrived promptly, with updates on arrival time. Polite and friendly, putting the 'happy' in Happy drains! Identified and fixed the problem, tested and cleared up and gave some useful advice for regular maintenance and long term plans. Good work."

...for more great reviews visit Checkatrade >

London drain responsibility

It's not always obvious who's responsible for a particular section of London drain or sewer pipe, but here's our quick guide to establishing who's responsible for London drains when they get blocked or need repair.

Who's responsible for blocked London drains?

If the drain serves exclusively your property and the blockage in the drain is with your property boundary then that is the owner's responsibility. If it's shared or beyond the property boundary then it’s probably the responsibility of Thames Water.  Our diagram below makes this much clearer. If in doubt, please give us a call for advice.

Who do I contact about a blocked London drain?

Sometimes London drain issues can only be successfully be resolved by an industry professional. At Happy Drains, we're able to restore free-flowing drains to your home or workplace however serious the blockage. Give Happy Drains a call and our team of friendly, professional technicians can get your London drains back in full free flowing working order, from sinks, to toilets, to the main drains – we have skills and leading equipment to restore flow fast.

Do Thames Water unblock London drains?

Thames Water will only clear drains that are their responsibility i.e. shared London drains or beyond your London property boundary. See our diagram below to establish whether your drain could be shared.

How do I contact Thames Water for a shared London drain problem?

If you think you have a shared London drain blockage or problem, you can contact Thames Water via their websites, but check the diagram below first:

Who’s responsible for blocked London drains



If we find the drain is shared and a Thames Water issue we will charge for our site visit and we will refer you to them for further investigation and possible refund of charges.

Diagnosing blocked London drains

How do you know if a drain is blockedIt's not always obvious if a drain is blocked or why it got blocked in the first place, but here's a few pointers to set you in the right direction.

How do you know if a drain is blocked?

An obvious indication that a London drain is blocked is a slow running sink or toilet. Sometimes the toilet over fills or the water even appears to have been sucked out the pan. That is a vacuum caused by a blocked drain downstream of the toilet. Water seepage in the yard or garden is also a likely indication.

Why do drains get blocked?

Never put fats down a London drain! Over time, this will always result in drain blockages. Likewise, paper towels, wet wipes & sanitary products should not be flushed down as they don’t breakdown and result in blockages. Too much paper and cat litter can also be the cause of blocked drains. Remember it’s a toilet not a bin!

Why does my drain keep getting blocked?

There are many factors, but something you need to consider first is professional London drain cleaning. This is because DIY solutions often just don’t work longer term. There could be underlying problems and further investigations are strongly recommended when experiencing regular drain blockages. Cracked or misaligned drains, root damage or accidental damage are common London drain problems that a professional company such as Happy Drains can help you with.

Can a blocked drain cause damp?

No, is the simple answer for a drain in good condition, but broken or cracked drains can cause damp. Drains are designed to be watertight. The water would seep out of a crack or failed joint to cause damp or numerous consequential damage issues. A flooded and overflowing drain will cause damp issues if left unresolved. Our CCTV survey can find all of these problems.

Repairing broken or damaged London drains

Sometimes London drains become blocked or leak due to damage which can result from many causes.

How do you repair a broken London drain?

The site condition would dictate the requirements, but the two main methods are either excavation or no dig technology such as a sleeve inserted within the drain. It depends which option is practical and cost effective based on appropriate investigations. A drainage professional would determine that after visiting site and undertaking a London CCTV drain survey.

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07824 757572

DIY tips for unblocking a London drain

DIY tips for unblocking a London drainIf you have the time and would rather spend your money on the more enjoyable things in life then we fully support DIY unblocking of London drains and here's our guide to help you with that. However, when all else fails, get in touch and rest assured our experts will resolve the problem FAST.

What can I use to unblock a London drain?

Try these tips and tricks for unblocking a London drain yourself:

  1. If it’s a slow running sink, try hot water or a proprietary chemical from a DIY store.
  2. Hire a set of rods, always try to push the blockage down to the next manhole or drain downstream.
  3. If it's a blocked gully , it might be simply leaves blocking the grill. Get a broom handle and scrape the gully grill, that might just to the trick.

How do you clear a London drain downpipe ?

If you can safely dismantle the downpipe, it may be easier to give it a go and clear by hand. If that doesn't work or it's not safe, it may need high pressure jetting or an electromechanical snake. Give us a call and we'll give you the best advice.

What kind of vinegar unclogs London drains?

The acid in white wine vinegar can break down fats.  Pour some baking soda into the sink then a bottle distilled white vinegar into the London drain. Don't be surprised by the audible reaction that occurs. Then poor hot water into the drain, then repeat. This is best for a slow running London drains.

How do you clear a clogged drain at home?

For a sink, shower or toilet boiling water is a simple and effective method. Simply boil water in a kettle pour it carefully directly down the drain. Boiling water is one of the most effective London home remedies melting fats and grease, loosening debris to restore flow.

How do you clear a blocked sink U-bend?

The U-shaped pipe beneath a sink is designed to use water as a seal to stop smells and drainage gasses from drifting back up and out into your home. The shape of the trap also catches heavy debris and if this is allowed to build up it'll result in blockages. It's easy to clear it, and a lot cheaper than calling out a London drain company:

  1. Empty the sink with a bucket, take the water and pour it down the WC.
  2. Put the bucket in place under the trap.
  3. Loosen the trap by undoing the plastic screw coupler, remove it and let the water out into the bucket.
  4. Take a metal coat hanger and run it through the pipe and the trap to dislodge any debris.

Unblocking a London drain with a plunger

Unblocking a London drain with a plungerWe recommend every London home should have one. The plunger one of the best home DIY tools for unblocking sinks and toilets. The toilet plunger is the bigger version. A sink plunger can be small or large, the bigger the plunger creates more plunge power – the magic ingredient.

For sinks, remove the metal strainer in the drain prior to plunging. The secret lies in creating a good seal between the plunger and sink or WC. Get the plunger in place and then get to work, with fast, sharp pumping motions. For toilets, the rubber disc must not be smaller than the U-bend. This is vital to successfully unblock a London toilet. Simply push the plunger up and down fast and hey presto.

Unblock a London drain with a hand driven snake

This simply works by pushing and twisting a thin snaking steel wire into the small-bore pipe work that serves sinks, showers and London baths. The cable is twisted and propelled forward by hand and when it hits the obstruction it dislodges the debris to restore the flow. This task takes a little time and perseverance, you will have to remove the trap before attempting to clear and drain using this technique (see our guide above) but make sure you place a bucket under the trap to catch the water.

How do you unclog a London drain without a snake?

Yes, the use of boiling hot water is often effective, and chemical drain cleaner can be also used. Kinetic force can also be effective, such as a water ram or a simple plunger. This uses the transfer of energy to push the blockage along the pipe. This is effective in a sealed system where there are no connections, so the force is focused forward to dislodge the blockage.

Using soda or cola to unblock a drain

You probably have a bottle or two around your home and it's perfect for unblocking drains. To be effective, your favourite bottle of fizzy pop should be at room temperature and should be full fat, not the diet or lite types. You may recall from science lessons at school what happens to a tooth if you leave in a fizzy drink. The same corrosive quality of your favourite cola does the same to a blockage if poured down the drain and left for an hour or two. Give this method a go. It's a little eco-friendlier compared to a dangerous chemical drain cleaner.

London CCTV Drain Surveys

London CCTV Drain SurveysSometimes the only way to get to the bottom of a London drain problem is to go inside the pipe with a camera and for that, Happy Drains are the no.1 choice of partner to provide such specialist services.

What is a London CCTV drain survey?

A London CCTV drain survey is a detailed examination of your drainage system. The survey will determine the structural condition and the serviceability of the drainpipe. During the inspection we will note all defects and issues to allow you to understand how the drain works and its condition. We use high-tech CCTV cameras that are propelled through the drain to identify and report any issues that might be present.

What is a CCTV drain survey report?

Any professional drain survey should come complete with a written technical report using industry standard software. This details information such as the date, manhole numbers from & to, size of pipe, pipe material, shape, direction, distance (m), lengths, remarks and pictures of relevant observation.

All of this information should be evidenced via a video file for referencing and quality assurance purposes.

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Happy Drains are highly rated at Checkatrade!
5650 reviews 9.79 out of 10

Badly blocked toilet and 1930's drain

"Excellent company! The job was very problematic, an upstairs toilet with low level drains from the 1930's, but they didn't give up until the difficult problem was fixed! Everything was left clean and in good working order. The workmen were fabulous and explained everything they were doing clearly at every stage. We wouldn't hesitate to recommend the whole team. They were a pleasure to have in the house! The final cost was very reasonable considering all the work that had to be done! It's no wonder they call themselves " Happy drains." From a very happy customer"

Unblocked a gullley drain

"The man was extremely calm and cheerful and went out of his way, even in pouring rain to clear my drain. I had limited access as the neighbour had built an extension over the manhole, but it didn't phase him and he completed the job."

Unblocked outside drain

"Called Happy Drains after reading the check-a-trade reviews to unblock a drain from the kitchen. Telephone staff were very helpful, provided an estimate immediately and rang back within 30 mins with a time for a visit on the same day. Tony rang 30 mins before arriving. He isolated the problem and unblocked the drain within minutes. Tony was cheerful and positive, leaving the place tidy and clean."

External drain unblocking for my tenants house.

"From the outset very polite and positive, came across as fair and transparent. Hassle free booking and the engineer that turned up to the property was very good and professional my tenant was well impressed. Would definitely recommend."

...for more great reviews visit Checkatrade >


For London blocked drains we use selected local London professionals.

This ensures London blocked drains are unblocked fast followed by CCTV inspections to get your London repairs in progress.

London drain services from a firm receiving great feedback...

Happy Drains are highly rated at Checkatrade!
5650 reviews 9.79 out of 10

Unblocking kitchen sink

"Great service. Very quick turn around (called at 09:30 and the plumber was on site at 12:00). Polite, and efficient. Got the job done in 40 mins. Would recommend."

Very blocked drain pipe

"Gordon and team were absolutely outstanding with the way they sorted a difficult problem Nothing was too much trouble for them and they fixed the blockage Brilliant company"

Unblock a toilet

"They came within the time slot they gave me / they told me where about the possible blockage was and fixed it , thank you. Would use them again."


"Vary pleased with the work friendliness price. There was also know call out fee that was great for the pocket. All in all happy all round. Would highly recommend Thank you Mrs b a Welding-bassett"

Clearing a blocked storm drain

"Happy Drains gave a very friendly and helpful service at a good price. They did the job efficiently and were happy to tell me how to prevent the problem in the future."

Removing a problematic drain trap

"Had Happy Drains out to fix a sewer line trap that was blocking regularly and causing us much grief. It took a couple of goes to diagnose the issue, but then we got a very reasonable quote compared with other providers. The job involved lifting our garden paving and digging up the soil to remove the trap. On the day, the team were very courteous, explained everything (in detail . . .), and left the area clean and tidy - also going above and beyond by fixing some other minor problems. It's too soon to say if the drain issue is fixed forever, but I was delighted with the service as received."

Kitchen drain unblocked

"Very helpful from first call. Explained what would happen and able to come out same day."

Unblock drains and Toilet

"Prompt informative helpful advice. Went above and beyond to evaluate all aspects of safeguarding to avoid a repeat."

Cleared a blocked drain

"It was easy to get a quote and to book the job. Communication was excellent. I was phoned with confirmation of the booking and to give me a more accurate time slot on the day. I was sent a summary of the work and findings, including pictures. It was a great service."

Clear blocked drain.

"This was the only firm I could find willing to quote a fixed fee for a blocked drain. Others will quote when they get here and/or add labour to the cost of using a high pressure hose. [I didn't want to have to haggle if they quoted a high price or turn them away and get another quote.] They gave me a time, turned up on time, fixed the blockage, charged the agreed fee and left no mess. A 'Ronseal' service."


"Happy Drains man arrived next morning . Had to jet drain to clear, then put the camera down cleared and tidied up. The man himself was not Happy Drains but from Ace drainage and contracted out to Happy Drains. Paid via phone while drainage man still there when job was finished. Very happy"

Drain unblocked

"The problem with the outside drain was soon sorted. The happy drains guy was very freindly and professional. I would recommend this company very much."

Blockage near soak-away

"Excellent service. Arrived on time and was patient due to the nature of the building. Quick, efficient and honest. Definitely would recommend."

CCTV down a well pipe

"They kept me informed about the visit and the engineer turned up when he said. The work was carried out efficiently and under difficult circumstances as there had been a flood and it was quite difficult to manoeuvre his equipment as there were obstacles all over the place. The engineer was friendly, informative and courteous. He explained what he was doing as he went along. The advice was sound even though he had never encountered the situation . The report was clear and straightforward . I found this a very pleasant firm. I wish they had the expertise to deal with the well, I'd use them."

Cleared our drains

"I cannot be happier. Got a call to say they were on their way. Reassuring from the time the operative left his vehicle. Very friendly, helpful and efficient. Super-quick resolution and checked all was running great before leaving. Much appreciated. Would recommend unreservedly. Best service from anyone for ages!"

Drain unblocking

"On return from holiday our bathroom drains where back filling under the decking. Contacted happy drains who could be out the next day. Drains where unblocked and washed down. Area around the manhole cover left in clean state and most importantly the drain free flowing. Very happy with the service and quick turnaround."

Outside drain unblocking

"From the opening initial phone call enquiring about their services, Happy Drains were great..The lady on reception understood what I needed straight away, asked me a couple of questions..and booked the call...Even though I'd never called them before, I wasn't asked to pay upfront, not even a deposit, The guy who came out was great, no tutting and scratching his chin and shaking his head, just dived straight in and did the job...and fixed the problem!"

Unblocking kitchen sink

"The Happy Drains operative was on time, charming and did a great, tidy job unblocking our kitchen sink. All in all a great service."

...for more great reviews visit Checkatrade >

or our office mobile
07824 757572

or our office mobile
07824 757572