Company lists · Data refreshed September 2026

Top 25 Sewer contractors based in the United Kingdom

Name: Sewer contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 382 companies tracked

RevenueBase identified 382 company matches for sewer contractors associated with the United Kingdom as of September 2026 and tracks 2,737 professional contacts across them, including 833 with verified work emails. London is the largest hub.

This list covers company matches for sewer contractors associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

382Companies

2,737Contacts tracked

833Verified emails

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The 25 largest sewer contractors based in the United Kingdom

Ranked by team size

Top 25 of 382 company matches for sewer contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Onsite Central Limited	Exact match	Worcester, United KingdomHQ recorded Sep 17, 2026	201-500	178 contacts →
	Exact match “Originally established in 1977, OnSite is a South Staffordshire Group owned company that has grown through strategic acquisition and organic expansion to become one of the UK's…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Envolve Infrastructure	Exact match	Cardiff Road, United KingdomHQ recorded Sep 17, 2026	201-500	136 contacts →
	Exact match “We’re envolve, specialist civil engineers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Steve Vick International LTD	Exact match	Bradford On Avon, United KingdomHQ recorded Sep 17, 2026	51-200	59 contacts →
	Exact match “Steve Vick International was founded in 1981 by the current chairman, Steve Vick, who saw an opportunity to develop ways of safely sealing off gas mains and services using…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	J A Brooks	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	55 contacts →
	Exact match “J A Brooks was established in 1925 and has a long history in the delivery of Public health and Water services in the London and South East and hold an excellent reputation as one…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Eurogold Groundworks & Civil Engineering Contractors LTD	Exact match	Liverpool, United KingdomHQ recorded Sep 17, 2026	51-200	53 contacts →
	Exact match “Eurogold Groundworks & Civil Engineering Contractors LTD are established as one of the premier civil engineering groundworks contractors in the north west region.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Drainline LTD	Exact match	Sayers Common, United KingdomHQ recorded Sep 17, 2026	51-200	52 contacts →
	Exact match “DrainLine Ltd caters for all types of drainage works – from a blockage in a small diameter line to the rehabilitation of a main line sewers, both foul and storm.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	BSG	Exact match	Maghera, United KingdomHQ recorded Sep 17, 2026	51-200	49 contacts →
	Exact match “With over 40 year’s industry experience, we are a leading engineering contractor with specialist expertise in the water and wastewater sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Biomarsh Environmental LTD Part Of Drains Direct UK Group	Exact match	Waltham Abbey, United KingdomHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match “Founded in 1972, BioMarsh has grown to be one of the leading companies in its field.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Dalrod UK	Exact match	Peterborough, United KingdomHQ recorded Sep 17, 2026	51-200	39 contacts →
	Exact match “DALROD offer specialist drain cleaning, CCTV drain surveys, drain relining, sewer renovation and pump maintenance solutions, with a 24/7 emergency service.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	NRC WWS LTD	Exact match	Wirral, United KingdomHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “At NRC WWS, we are commercial drainage contractors that offer a range of solutions including planned maintenance and 24-hour contract cover.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Environmental Techniques	Exact match	Lisburn, United KingdomHQ recorded Sep 17, 2026	51-200	26 contacts →
	Exact match “Environmental Techniques was established in 1992 to provide trenchless drainage inspection, cleaning and rehabilitation throughout the United Kingdom and Ireland, with offices in…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Retroflo	Exact match	Seaham, United KingdomHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “Based in the North East of England, Retroflo Ltd are an Electrical and Mechanical contractor whose main activities are focused in the water industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Lining Division Limited	Exact match	Saint Leonards, United KingdomHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “Lining Division Ltd, a Vortex company, is a trenchless solutions provider for the wastewater industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Ukdn Waterflow LG LTD	Exact match	Birmingham, United KingdomHQ recorded Sep 17, 2026	201-500	24 contacts →
	Exact match “UKDN Waterflow (LG) Ltd – Respond \| Report \| Repair As of November 2015 UKDN Waterflow (LG) Ltd was acquired by Lanes Group plc the Largest wholly owned UK Drainage solution…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Lanes Group PLC	Exact match	Leeds, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	22 contacts →
	Exact match “Lanes Group is more than a wastewater solutions provider.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Cotterills	Exact match	Sutton Coldfield, United KingdomHQ recorded Sep 17, 2026	11-50	21 contacts →
	Exact match “At Cotterills, we’re all about doing right by people and we’ve been doing it for over 30 years.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Exjet Services	Exact match	Paignton, United KingdomHQ recorded Sep 17, 2026	11-50	21 contacts →
	Exact match “Exjet Services are one of the UK’s premier specialist drainage engineering, surveying, cleansing and sewer rehabilitation companies.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Mcbreen Enviro UK	Exact match	Depots: Warrington, United KingdomHQ recorded Sep 17, 2026	51-200	20 contacts →
	Exact match “Welcome to McBreen Enviro UK, part of the McBreen Group, we bring over 19 years of expertise in trenchless repairs, sewer robotics, drainage and environmental services to deliver…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	24hr Aquaflow Services Limited	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	20 contacts →
	Exact match “We deliver plumbing, pump and drainage solutions 24 hours a day, seven days a week.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	GEE DEE Plant	Exact match	Seaton Carew, United KingdomHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “Offering drainage solutions - Interceptor & Septic Tank Cleaning - Drain CCTV - Drain Rehabilitation Operating since 1985 and based on a 3/4 acre site on Hartlepool's Graythorp…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Aquaflow Services London S Plumbing & Drainage Experts	Exact match	Canterbury, United KingdomHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “At Aquaflow, we are trusted plumbing and drainage contractors, specialising in utility system solutions for commercial, facilities, and industrial clients across London and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	United Drains	Exact match	Ongar, United KingdomHQ recorded Sep 17, 2026	51-200	19 contacts →
	Exact match “United Drains Ltd, offer both Drainage & Plumbing services NATIONWIDE.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Wilkinson Environmental LTD	Exact match	Atherstone, United KingdomHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “Operating out of Atherstone, Warwickshire in The Midlands we have a forward-thinking management team with over 30 years’ experience in the drainage services and civil engineering…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Birmingham Drain Services	Exact match	Birmingham, United KingdomHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “Birmingham Drain Services: Part of The Drain Group Founded in 2008, Birmingham Drain Services has established itself as a trusted leader in drainage solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	IRM Group	Exact match	Bradford, United KingdomHQ recorded Sep 17, 2026	51-200	18 contacts →
	Exact match “Welcome to IRM Group, your trusted partner for all drainage solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “sewer contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 382 sewer contractors based in the United Kingdom

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Sewer contractors based in the United Kingdom at a glance

As of Sep 17, 2026

30.4%Verified-email coverage

7.2Average contacts per company

11-50Median size (employees)

3.7%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

180

11-50

141

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 382 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “sewer contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 833 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sewer contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sewer contractors are there based in the United Kingdom?

RevenueBase identified 382 company matches for sewer contractors associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Onsite Central Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most sewer contractors?

London leads with 14 company records, followed by Birmingham (5) and Colchester (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 833 professional contacts with verified work emails tracked across these 382 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.