Flow Drainage LTD - Drainage Specialists
In your Local Area
Checkatrade member since September 2023
Services
- 24 Hour Drain Clearance
- Drain Repair
- CCTV Surveys for Drains
- Blocked Drains
- Septic Tank Installation
- Drainage Investigation
- Drain Installation
- Emergency Drain / Sewer Clearance Service
- Septic Tank Repair
- Soakaway Clearance
- Waste Water Treatment Plant Installations
- Drain Relining
- Sewage Pump Installation
- Blocked Toilets
Customer Reviews
Write a review9.75 /10
Based on 36 reviews over the past 12 months
Quality of work
9.83
Reliability
9.78
Communication
9.64
What customers are saying
AI-generated from customer reviews over last 24 months
Customers consistently describe this company as prompt, friendly, and professional, highlighting the team's efficiency and clear explanations. While the work is highly rated, a small number of reviewers noted delays in receiving post-job paperwork.
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Reviews (189)
10 late emergency drain
Posted 16 December 2025
needed an emergency call out to clear a backed up external drain. they managed to get out to me that evening and quite late at that. i appreciate the effort they made to get out to my problem at such a late hour. had the issue resolved in good time and left me with great advice for further future maintenance. much appreciate the assistance and would wxpect them to do the same for any other client. definite recomendation.Verified reviewerJob location: UB5- SSarah B
10 Reliable
Posted 16 December 2025
Fantastic, very helpful, would definitely recommendVerified reviewerJob location: TA21 - JJennifer P
10 Careful Appraisal, Excellent Work, Transparency Regarding Cost
Posted 14 December 2025
Job location: TQ3Prompt and polite initial contact was followed by a comprehensive review of the problem using a little camera along the pipe. The bad news was then delivered and explained with options and without undue pressure to proceed. We did proceed; the work was carried out and the garden beautifully restored. Very happy with this work and with Dean and Caleb. 9.67 Installation of a new soakaway
Posted 28 November 2025
Our previous soakaway failed because it had been poorly installed, so we were looking for a company to do the job properly this time, not the cheapest quote. We are very happy with the work that was carried out. We now have a soakaway with gravel around the membrane wrapped crates to stop mud clogging the soakaway, and a gully to stop debris getting down it and clogging it that way. The only problem we've had is that they put plywood boards down on our drive to protect it from the skip and they didn't come back to take the boards away after the skip was collected despite repeated requests.Verified reviewerJob location: SO3010 Rain water drains
Posted 12 November 2025
We had a rainwater drainage infrastructure that needed replacement. They did a great job, took care of all the licencing, authorisations and approvals needed by the water authorities and local council. Even thought they dug up a massive space, they left the site in pristine condition. Very professional, friendly and knowledgeable team, always arrived on time, engineer Dean even worked on 24th and 26th December!!!! and owner Ashley got involved with project too. They are a great company, and I highly recommend them. I would definitely use them again, should the need is there.Verified reviewerJob location: SL6- JJohn W
9 prompt professional service
Posted 09 November 2025
Job location: RG5Attended promptly. Fixed the issue
Photos
Company Info
Owner
Mr Ashley Calderwood
Ltd Company
3 years on Checkatrade
VAT Registered
No
Here at Flow Drainage we are a family run business and we’re small enough to care but large enough to cope with any drainage issue! Whether it’s a simple blockage, a general inspection, a repair or a completely new installation we get it right first time and take great pride in our work! Our reviews and customer satisfaction speaks for itself!
We always aim to get your drainage related issues dealt with as quickly as possible in the most cost effective manor and will always give advice wherever possible to make sure you’re not in this position again!
Our team are fully trained, fully qualified in different aspects of drainage with accreditations to prove it and are fully insured, we take great care and work diligently with appropriate safety barriers and signage. We will always leave your property looking as it was and clean up after ourselves!
We specialise in CCTV and compliance surveys and provide very clear thorough reports and are capable of carrying out any task you ask of us,
Don’t hesitate to get in touch and we’ll make the process smooth from start to finish!
Accreditations and awards

This trade passed up to 12 Checkatrade vetting checks
Member since September 2023
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