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5 Best Septic Tank Services in London (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

Brad Smith
By Brad Smith, Home Services Expert · ✓ Data verified July 2026 · 8 min read

The toilet backs up on a Sunday night, or the kitchen sink won't drain and two other plumbers have already given up. London's septic tank services trade is full of vans with slogans, but the names on this page carry 845 reviews between them, and ratings still swing from 4.4 up to a perfect 5.0 depending on who actually shows up and fixes it once.

Short answer: Near Me Plumbers tops this list with a perfect 5.0 rating across 235 reviews, the highest review volume and confidence score here. Metro Rod's two London branches and iDrain aren't far behind at 4.9, and Blocked Drains London (BDS) starts jobs from £75. All five handle septic tank, drainage, and emergency callouts across London.
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How London's drainage specialists stack up

# Business Rating Reviews Best for
1 Near Me Plumbers 5.0 235 Overall pick, broadest trade coverage View ›
2 Metro Rod London North 4.9 190 24/7 emergency callouts, no show-up fee View ›
3 Blocked Drains London - BDS Drainage 4.4 227 Named septic tank services with published from-£75 pricing View ›
4 Metro Rod London Central 4.9 97 Central London septic tank and cesspit emptying View ›
5 iDrain 4.9 96 Stubborn blockages other companies couldn't fix View ›
5 Best Septic Tank Services in London (2026)

The five we'd call first

Near Me Plumbers logo
#1 Overall🕑 Open 7 days↩ Responds to reviews

Near Me Plumbers

5.0235 Google reviews

Near Me Plumbers is a Southeast London trade outfit that covers far more than its name suggests: plumbing, drainage, gas engineering, central heating, bathroom renovation, and even property maintenance and management, out of a base in SE8. The team turns up for both small jobs, a broken washing machine, and bigger ones, a full bathroom strip-out after a pipe leak, and reviewers keep naming the same engineers, Mario, Alex, and Daniel, by name. That repeat naming is usually a sign of a stable crew rather than a rotating cast of subcontractors. Septic tank and drainage work sits alongside its wider plumbing and property services.

What people praise

  • Reviewers repeatedly name the same engineers (Mario, Alex, Daniel), a sign of a consistent crew
  • Praised for punctual, professional visits and clear explanations before work starts
  • Handled a boiler capped by British Gas and had it sorted the next day
  • Customers highlight tidy, careful work on larger jobs like full bathroom strip-outs

Worth knowing

  • Covers such a wide range of trades that it's worth confirming septic-specific experience when you call
Reputation scorecardrank in London
Rating5 / 5
Review volume235 · 97th
Confidencehigh
Recency8 weeks ago
Info completenesssite · phone · hours
Rating breakdown99% 5-star
✓ VerifiedSource: Google

Our take: The perfect 5.0 rating across 235 reviews, the highest volume on this list, is what puts Near Me Plumbers at the top. It's a broad trade business rather than a septic-tank pure play, but the reviews back up the range.

38 Glaisher St, London SE8 3ET

Metro Rod London North logo
#2🕑 Open 7 days

Metro Rod London North

4.9190 Google reviews

Metro Rod London North is the North London branch of Metro Rod, a national drainage franchise working out of New Southgate and covering blocked drains, CCTV surveys, pump servicing, and cesspit and septic tank emptying. The company advertises 24/7 callouts with no additional charge just to show up, and its site lists accredited drainage specialists and pump and tanker services as core to the business. Reviewers describe engineers who call ahead, explain the job as they go, and clean up afterward.

What people praise

  • 24/7 availability with no separate callout charge, according to the company's own site
  • Engineers call ahead and explain the work clearly before starting, per multiple reviews
  • Sourced and fitted a specialist water pump and filter for a hard-water property
  • Rebooked and reallocated a job quickly when the original engineer called in sick

Worth knowing

  • Part of a national franchise network, so which engineer you get can vary by job
Reputation scorecardrank in London
Rating4.9 / 5
Review volume190 · 86th
Confidencemoderate
Recency8 weeks ago
Info completenesssite · phone · hours
Rating breakdown96% 5-star
✓ VerifiedSource: Google

Our take: A 4.9 rating across 190 reviews and genuine 24/7 cover make this a strong pick if you're north of the river and need someone out fast.

Building 3, Office, 320 Oakleigh Rd S, London N11 1GN

Blocked Drains London - BDS Drainage logo
#3🕑 Open 7 days

Blocked Drains London - BDS Drainage

4.4227 Google reviews

BDS Drainage is a London-wide drain and septic tank company that lists blocked drains, CCTV surveys, drain repairs, pipe relining, high pressure jetting, and septic tank servicing among its named services, with drains unblocked from £75 advertised on its site. It covers London, Essex, Kent, Surrey, Bedfordshire, Hertfordshire, and Buckinghamshire, and promises a rapid response and a written guarantee. Reviewers describe engineers using cameras to properly diagnose a problem rather than guessing, including one case where BDS fixed a blockage two other companies, including a well-known mainstream name, had failed to solve.

What people praise

  • Uses camera inspection to diagnose problems properly rather than guessing, per multiple reviews
  • Solved a blockage after two other companies, including a big-name one, had already failed
  • Reviewers highlight honest, upfront cost breakdowns before work starts
  • Weekend and short-notice availability, including a same-weekend installation

Worth knowing

  • Rating sits a touch below the top of this list (4.4 vs 4.9-5.0), with more mixed reviews mixed into its 227 total
Reputation scorecardrank in London
Rating4.4 / 5
Review volume227 · 92th
Confidencemoderate
Recency2 months ago
Info completenesssite · phone · hours
Rating breakdown79% 5-star
✓ VerifiedSource: Google

Our take: BDS earns its spot on real depth of service, camera-based diagnosis and named septic tank work, even though its overall rating trails the top three slightly.

71-75 Shelton St, London WC2H 9JQ

Metro Rod London Central logo
#4🕑 Open 7 days

Metro Rod London Central

4.997 Google reviews

Metro Rod London Central is the second Metro Rod branch on this list, covering central London postcodes, and its site specifically lists cesspit and septic tank emptying alongside blocked drains, CCTV surveys, and drain repair. Like its North London sibling, it runs under the national Metro Rod brand with the same emergency helpline and accreditation. Reviewers describe fast turnarounds, including insurance-referred jobs booked and resolved within a day, and engineers who go beyond the immediate fix to track down a missing part.

What people praise

  • Site names cesspit and septic tank emptying directly among its core services
  • Booked and resolved an insurance-referred job within a day, per one reviewer
  • Staff described as friendly and thorough from the initial phone call onward
  • One engineer went out of his way to source a missing part during the job

Worth knowing

  • Fewer reviews on record (97) than its North London sibling or BDS, though the ratings are strong
Reputation scorecardrank in London
Rating4.9 / 5
Review volume97 · 81th
Confidencemoderate
Recency2 months ago
Info completenesssite · phone · hours
Rating breakdown97% 5-star
✓ VerifiedSource: Google

Our take: A near-perfect 4.9 rating and explicit septic tank servicing make this a solid central London option, just with a shorter review history than some others here.

31 Park Rd, London EN4 9QD

iDrain logo
#5🕑 Open 7 days

iDrain

4.996 Google reviews

iDrain is a Wandsworth-based drainage specialist covering emergency drainage across London, run in a way that feels closely tied to one lead engineer, Danny, who's named directly in nearly every review on record. The company offers CCTV drain inspection and digital invoicing that includes photos of the work, useful if you're not on-site when the job happens. Site copy emphasizes fast response, with one reviewer describing a technician arriving within 30 minutes of an out-of-hours call.

What people praise

  • Solved a blockage after two plumbers and a separate drainage expert had already failed
  • One reviewer says the company offers free drainage clearing for up to 12 months after a job
  • Digital invoicing includes photos, useful for landlords or absent property owners
  • Reviewers describe arrivals within 30 minutes of a same-day call

Worth knowing

  • Reviews consistently name a single engineer, so availability may hinge on one person's schedule
Reputation scorecardrank in London
Rating4.9 / 5
Review volume96 · 75th
Confidencemoderate
Recency3 months ago
Info completenesssite · phone · hours
Rating breakdown97% 5-star
✓ VerifiedSource: Google

Our take: iDrain's 4.9 rating comes from a smaller pool of reviews than the others, but the pattern, solving problems bigger firms couldn't, is consistent and specific.

515 Wandsworth Rd, London SW8 2XR

6

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How we scored these

Rating is each company’s live Google average. Review volume measures how many customers actually left one, ranked against the others on this list. Confidence blends the two, so a 5.0 built on 235 reviews scores higher than one built on 20. Recency checks how fresh the most recent reviews are. None of these businesses paid to move up this list; the numbers come straight from public Google data.

What does septic tank and drainage work cost in London? (2026)

Pricing for London drainage jobs varies a lot depending on whether it’s a same-day blockage or a bigger CCTV survey and repair.

JobTypical price
Standard drain unblocking (BDS Drainage published rate)From £75
Emergency out-of-hours calloutHigher than standard daytime rate, ask for a quote upfront

Rate compiled July 2026 from BDS Drainage’s published pricing (bdsdrainage.co.uk); other providers on this list don’t publish flat rates, so always ask for a written quote before work starts.

Covering all of London

These five between them cover most of Greater London: BDS Drainage works across London, Essex, Kent, and Surrey; Metro Rod runs separate branches for North and Central London; iDrain is based in Wandsworth and covers south and central postcodes; Near Me Plumbers operates out of SE8. Wherever you’re searching from, one of these five likely covers your postcode.

What to ask before you book a septic tank or drainage job

  • Do you use a camera to inspect the drain before quoting, or just estimate?
  • Is the callout fee waived if I go ahead with the repair?
  • What’s included in the price, and is there a written guarantee?
  • How quickly can you get an engineer out for an emergency?
  • Do you handle septic tank emptying as well as blocked drains?
  • Is the quote fixed, or could it change once you’re on site?

Frequently asked questions

Are these rankings paid?

No. Rankings come from public Google data. A business can pay to be a Featured Partner (badge and top placement), but that never changes another business’s score or position.

How did you choose these five?

We looked at every septic tank and drainage service in London with a meaningful number of Google reviews, then ranked by a mix of rating, review volume, and how recently people are still reviewing them.

How often is this updated?

We refreshed these numbers in July 2026 and check back periodically as ratings and review counts change.

Do I need a septic tank specialist if I’m on mains drainage?

Most London properties are on mains sewage, so these companies mainly handle blocked drains, CCTV surveys, and general drainage. If you do have a septic tank, more common outside central London, ask directly whether they service it.

What’s the difference between the two Metro Rod branches?

Metro Rod London North and Metro Rod London Central are separate franchise branches covering different postcodes under the same national brand, so check which one serves your address.

The bottom line

For most Londoners, Near Me Plumbers is the safe default: a perfect rating across the largest number of reviews here. If you’re outside its patch, either Metro Rod branch or iDrain will get an engineer out fast. Whoever you call, ask for a camera inspection before they quote. It’s the difference between a real fix and a guess.

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