How much does drain cleaning cost?

Professional drain cleaning typically costs £80 to £200 for a residential property, depending on the size of the system and the method used. High-pressure jetting, which provides the most thorough clean, usually costs £100 to £200. We include a CCTV inspection at no extra charge, and we quote fixed prices before we start - so no surprises.

What's the difference between drain cleaning and drain unblocking?

Drain unblocking clears a specific blockage to restore flow. Drain cleaning is more thorough - it removes all the built-up grease, scale, soap residue, and debris from the inside of your pipes. Think of unblocking as fixing today's problem, and cleaning as preventing tomorrow's. After a proper clean, your drains should flow faster and stay clear for longer.

How often should I have my drains cleaned?

For most homes, an annual clean is enough to prevent problems. If you have a busy household, older pipes, or trees near your drainage, you might benefit from cleaning every 6 months. Restaurants and food businesses often need monthly cleaning to manage grease build-up. We can advise on the right schedule for your situation.

What is high-pressure drain jetting?

High-pressure jetting uses a powerful stream of water (typically 3,000 to 4,000 PSI) to scour the inside of your pipes. The water blasts away grease, scale, soap build-up, tree roots, and other debris - leaving your pipes clean and flowing freely. It's more thorough than rodding and doesn't use any chemicals that could damage your pipes.

Is drain jetting safe for all pipes?

Jetting is safe for most pipe materials, including clay, plastic, and cast iron. Before we start, we check your pipes with CCTV to assess their condition. If there's any damage or weakness that could be affected by jetting, we'll tell you and recommend an alternative approach. We adjust the pressure to suit your specific pipes.

Can drain cleaning prevent blockages?

Yes - that's the main reason to do it. Blockages don't happen overnight. They build up gradually as grease, soap, hair, and debris accumulate on the pipe walls. Regular cleaning removes this build-up before it restricts the flow enough to cause a blockage. Most of our maintenance customers haven't had a blocked drain in years.

What causes drains to need cleaning?

The main culprits are grease and fat from kitchens, soap residue and hair from bathrooms, and general debris that finds its way into outside drains. Over time, this material sticks to the pipe walls and narrows the diameter, slowing drainage and eventually causing blockages. Tree roots can also grow into cracks and joints, catching debris and accelerating the problem.

How long does drain cleaning take?

Most residential drain cleans take 30 minutes to an hour. Larger properties or drains with significant build-up may take up to 2 hours. Commercial properties with extensive drainage systems can take half a day or longer. We'll give you an estimate when we quote, and the time doesn't affect your price - we charge a fixed rate, not by the hour.

Will drain cleaning fix slow drains?

Usually, yes. Slow drainage is typically caused by partial blockages or build-up narrowing the pipe diameter. A thorough jet clean removes this material and restores full flow. If the CCTV inspection reveals a structural problem like a collapsed section or severe root damage, we'll explain what's needed to fix it properly.

Do you offer drain cleaning maintenance contracts?

Yes. We offer scheduled maintenance plans for homes and businesses that want regular cleaning without having to remember to book it. You choose the frequency - monthly, quarterly, or annually - and we handle the rest. Maintenance customers also get priority response if they ever have an emergency.

Are chemical drain cleaners a good alternative?

We don't recommend them. Chemical cleaners can damage pipes over time, especially older clay or cast iron systems. They often only partially clear blockages, leaving residue that quickly builds up again. They're also harsh on the environment. High-pressure jetting cleans more thoroughly without any chemicals - and it's actually better for your pipes.

Drain cleaning

Keep your drains flowing freely - before small problems become big ones.

High-pressure jetting to remove grease, scale, and debris

Preventative cleaning to stop blockages before they happen

One-off cleans or regular maintenance schedules

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Why choose OneFlow?

based on 180+ Google reviews

No callout fees

You only pay for the cleaning itself. No charges for travel, quotes, or the CCTV inspection we include as standard.

Fixed pricing

We quote a fixed price before we start. Whether it takes 30 minutes or 2 hours, the price stays the same. No surprises.

Thorough, not just quick

We don't just clear the surface - we jet the full length of your drains to remove built-up grease, scale, and debris. It's the difference between a temporary fix and a proper clean.

Maintenance plans available

For homes and businesses that want regular cleaning without the hassle, we offer scheduled maintenance plans. Set it up once, and we'll take care of the rest.

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Most drains cleaned in under an hour

Thorough jetting that removes years of build-up - not just today's blockage.

98%

Of customers would recommend us.

3000+

Jobs completed last year alone.

Prevention costs less than emergencies

Regular drain cleaning removes the grease, scale, hair, and debris that builds up over time - before it causes a blockage.

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More than just unblocking

Unblocking clears today's problem. Cleaning prevents tomorrow's. High-pressure jetting scours the inside of your pipes, removing the build-up that causes slow drainage, bad smells, and recurring blockages.

We check while we clean

Every drain clean includes a CCTV inspection. We see exactly what's in your pipes - and whether there are any cracks, root intrusion, or damage that could cause problems later.

Why choose a local team?

See how we compare to the big brands.

The big names

What you often get with the big names.

Quick rod and go - surface cleared, build-up left behind

Hourly rates that creep up while you wait

CCTV survey sold as an expensive extra

Different engineer every time

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OneFlow

What you get when you call us.

Full-length jetting that removes years of build-up

Fixed prices quoted upfront

CCTV inspection included as standard

Same local engineers who know your drains

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Drainer of the
year 2025

The Drainage Awards

What our customers say

Real reviews from real customers.

“Called at 6am with sewage coming up through the shower. Engineer arrived before 8, fixed it within the hour. Can't thank them enough.”

— James T, Southampton

“Third company I'd tried that week. The other two never showed. OneFlow answered, turned up same day, and actually fixed it. Should have called them first.”

— Michelle R, Brighton

“No messing about. Showed me the camera footage, explained what was wrong, gave me a price, and got on with it. Exactly how it should be.”

— David H, Portsmouth

“Blocked drain on Christmas Eve. Thought we'd be stuck for days. They came out that evening and sorted it. Absolute lifesavers.”
‍

— Sarah K, Guildford

“We've used them for three rental properties now. Always answer the phone, always turn up, always fair on price. Hard to find.”
‍

— Mark L, Bournemouth

“Engineer was honest and said we didn't need half the work another company had quoted for. Saved us hundreds. We'll use them every time now.”

— Karen W, Winchester

“Toilet blocked on the morning of our daughter's birthday party. They had someone here within the hour and sorted it before the guests arrived.”

— Rachel M, Crawley

“Other companies quoted over the phone then doubled it on arrival. OneFlow quoted £180, charged £180.”
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— Tom S, Bournemouth

“Drainage issue had been misdiagnosed twice by other firms. OneFlow found the real problem in ten minutes with their camera. Fixed the same day.”

— Angela D, Eastbourne

“Rang at 11pm expecting to leave a voicemail. Actual person answered. Engineer here by midnight. Didn't think companies like this still existed.”

— Chris B, Woking

FAQs

Still have questions?

Get in touch with our friendly support team.

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Ready to get your drains cleaned?

Same-day availability. Fixed pricing. No callout fees.

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90-minute average response across the UK.

★★★★★ based on 180+ Google reviews