CLEARMASTERS
Planned pump station maintenance
For housing providers and managing agents with pump stations across several estates, we set up a planned servicing programme, test every pump and alarm, and send a report for each site.
Learn moreOur individual town pages cover what we do in each part of London. This page is for organisations that look after more than one site: housing associations and management companies, facilities managers, schools and colleges, restaurant groups and retailers with branches across the capital.
Instead of calling a different contractor for every building, you can put all your sites on one planned schedule: grease traps emptied, pump stations serviced, interceptors inspected and gullies cleaned, with paperwork for every visit and one point of contact. When something goes wrong out of hours, the same team answers the phone.
We’re SafeContractor, Achilles UVDB and RISQS approved, and our crews work across London most days.
Services for multi-site clients
View all services
Pump Station Servicing
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Grease Traps & Commercial Waste
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Gullies & Interceptors
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Blocked Drains & CCTV Surveys
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Septic Tank Surveys
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Treatment Plant & Pump Repairs
Learn moreAcross
Greater London
Greater London
Contractor
accredited
accredited
Multi-site
contracts
contracts
24/7
call-outs
call-outs
Own tankers
& engineers
& engineers
What we do for multi-site clients
Grease traps for restaurant groups
For restaurant groups and food retailers with branches across London, we empty every grease trap on a schedule that suits each site, with a waste transfer note for every collection.
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Interceptors and gullies for estates and depots
Retail parks, depots and car parks need interceptors and gullies cleaned regularly. We can cover all your sites on one schedule.
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Reactive call-outs and surveys
When a drain blocks or a pump fails at any of your sites, one call gets the job logged and a crew sent. CCTV surveys give you a record of each site’s drains for planning.
Learn moreLocal knowledge
Why multi-site clients use us
Simpler for you, consistent across your sites.
One point of contact
One team, one phone number and one set of paperwork across all your London sites.
Planned schedules
Regular visits set for each site’s needs, with reminders when they’re due.
Compliance records
Waste transfer notes and written reports for every visit, ready for audits.
Local to you
Areas we cover in and around Greater London
We cover sites across Greater London and the surrounding counties.
Central and inner London · sites we cover
- Westminster
- City of London
- Camden
- Islington
- Hackney
- Tower Hamlets
- Southwark
- Lambeth
Outer London · sites we cover
- Croydon
- Sutton
- Kingston
- Richmond
- Hounslow
- Ealing
- Brent
- Barnet
- Enfield
- Waltham Forest
- Redbridge
- Bexley
Not sure if we cover you?
If you have sites anywhere in London, call us to talk through a maintenance plan.
Nearby areas
Why Greater London customers use us
Built for organisations with several sites
Whether you manage ten pump stations or forty restaurants, here’s what you can expect.
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Accredited for commercial sites
SafeContractor, Achilles UVDB and RISQS approved, so we can get onto managed sites and meet your contractor checks.
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One call for everything
Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.
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Paperwork done properly
A waste transfer note with every collection, and a written report after surveys and services.
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We remember so you don’t have to
Regular customers get a reminder when their next empty or service is due.
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Day and night, all year
Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.
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The right kit for the job
Tankers from 2,000 to 4,000 gallons, jet/vac combination units, CCTV survey kit and confined space teams for pump station wet wells.
What our customers say
9.84/10
Checkatrade
From 134 reviews · Read them
4.9/5
From 63 reviews · Read them
Scores as of September 2026
★★★★★I have used Clearmasters for years. They are always on time, polite and reliable whether your need them to empty your septic tank or undertake maintenance work. I wouldn’t use anyone else. Local and the best.
John E. Google review
★★★★★Work carried out professionally as usual, the only company I'd recommend.
★★★★★Great service from the initial call to the guys that come out. And we’re at the house within 3-4 hours. That’s why we’ve always used them
How it works
What happens when you book
How we set up a multi-site contract.
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Step 1
Tell us what you’ve got
Tell us about your sites: where they are, what drainage they have and any history of problems. We’ll suggest a schedule for each one.
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Step 2
We come out and do the job
We visit each site on schedule and respond to call-outs. It helps if:
- you give us a site list with addresses, contacts and access arrangements
- we know about inductions, permits or security at each site
- you tell us who should receive reports and invoices
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Step 3
Paperwork and the next visit
Every visit comes with a waste transfer note or written report. We remind you when visits are due and can provide a summary across all your sites.
Free, no-obligation quote
Get a quote for your Greater London property
Tell us about your sites and we’ll come back with a proposal. For an emergency at any site, call us now.
- Free proposals for multi-site contracts
- Pump stations, grease traps, interceptors and drains
- SafeContractor, Achilles UVDB and RISQS approved
Urgent?
03333 233566
Questions answered
Greater London contract FAQs
What housing providers, facilities managers and multi-site businesses ask us most.
Can you cover all our London sites under one contract?
Yes. We set up a schedule for each site under one agreement, with one point of contact.
Do you provide paperwork for every site?
Yes. Every collection comes with a waste transfer note, and every service or survey with a written report.
How do call-outs work under a contract?
Call 03333 233566 at any time. We log the job against your account and send a crew.
Are you approved for contractor-vetted sites?
Yes. We’re SafeContractor, Achilles UVDB and RISQS approved.
Do you cover sites outside London too?
Yes. We also cover Surrey, Sussex, Kent and Hampshire.
Can you start with a survey of our sites?
Yes. Surveys give you a baseline of each site’s drainage and help us suggest the right schedule.
Got a different question? Call 03333 233566 or send us a message.
Fully accredited & compliant
We're independently vetted and certified so you can trust who you're letting onto your site.
SafeContractor
Health & safety pre-qualification accreditation, verifying our processes meet recognised safety standards.
RISQS
Railway Industry Supplier Qualification Scheme — approved to work safely within the rail industry supply chain.
Achilles UVDB
Utilities Vetting Database membership, confirming we meet the utilities sector's supply chain standards.
Trading Standards Approved
Vetted and approved under the local authority's trusted trader scheme for honesty and fair dealing.
NADC Member
Members of the National Association of Drainage Contractors, the UK trade body for the drainage industry.
Registered Waste Carrier
Registered with the Environment Agency, so your waste is handled and disposed of fully within the law.