“Steve thank you so much for clearing out that blockage. After 1 year and multiple visits from operators from L&Q, steve gets the job done in 20mins. I am literally standing up and giving you a standing ovation. Jumping with joy. Job done. Top guy.”
24/7 EMERGENCY DRAINAGE · 15 AREAS COVERED
South London's drainage specialists. On call 24/7.
MSJ Drain Clearance Ltd — Constructionline Gold, CHAS, Environment Agency, SafeContractor and UKATA accredited. Covering 15 areas across Central and South London.
Five accreditations · One freephone · South London covered





The MSJ standard
Commercial-grade. Residentially priced.
The five badges on our letterhead — Constructionline Gold, CHAS, Environment Agency, SafeContractor, UKATA — are accreditations most South London drainage firms don't carry. They mean we can walk onto any commercial site or council job. We bring those same standards to a blocked kitchen sink.
“The same standards we bring to a commercial site are the standards we bring to a kitchen-sink callout.”
Our work splits between domestic emergencies — blocked drains, burst pipes, sewage backups — and commercial groundworks where the accreditations matter most. Same engineers, same freephone, regardless of which one you are.
Coverage area
15 areas across Central, South and Surrey.
Schematic — see the areas page for postcodes covered.
Why MSJ
Five accreditations. One freephone. No call centres.
Rapid Response
24/7 emergency line, on-site fast across South London.
Five Accreditations
Constructionline Gold, CHAS, Environment Agency, SafeContractor, UKATA.
Freephone 0800
Never costs you a penny to call us — even from a mobile.
Domestic & Commercial
Kitchen-sink callouts to commercial groundworks. Same standards either way.
What we do
Drainage, plumbing, and the work most firms won't touch.
Blocked Drains
Sinks, toilets, mains and rainwater drains. Cleared on the day in most cases.
Read more →Emergency Call-Outs
Burst pipe, flooding, sewage backup. Call the freephone — we'll tell you the soonest we can be there.
Read more →CCTV Drain Surveys
Pre-purchase, insurance, recurring blockages. Report and footage emailed straight to you.
Read more →Plumbing
Taps, leaks, valves, pipework, bathroom fixings. Domestic and commercial.
Read more →Drain Repairs
Patch repairs, lining, root removal, full excavation and re-lay where needed.
Read more →Groundworks
Larger excavation, new drainage runs, manhole installation, soakaways.
Read more →Where we work
15 areas across Central, South and Surrey.
Each area has its own page with local drainage, emergency call-out, and CCTV survey information. Click through to your area for postcodes covered and response times.
How it works
Three steps. Nothing surprising on the bill.
Call the freephone
0800 121 8870. Tell us what's wrong — a photo or description helps us bring the right kit.
We turn up and quote
On-site survey, written quote before any work starts. No work, no charge.
Job done — paperwork in writing
Invoice, receipt, and any survey report or aftercare notes emailed straight to you.
What customers say
Real reviews from real South London customers.
“Had a leak with 5 different plumbers who couldn't find it. Then along came Lee. He found the leak fixed it, put everything he had moved or taken up back in place spending six hours doing it. He even cleaned up at the end. Thank you Lee for putting a smile back on our faces. No more wet feet. You found it quickly and fixed it well.”
“Phenomenal! Lee has now done a few jobs through our HA and he's brilliant! On time works late to complete the job! Works so hard, polite and friendly and nothing is ever an issue, Lee is an asset to the company.”
Local drainage by area
Find your area, find your service.
Every area we work in has its own page for our three most-requested services. That's 45 local landing pages, each with postcodes covered and area-specific information.
Get in touch today
Drain emergency? Call free.
Freephone runs 24/7 for emergencies — office hours for everything else.
