Grease traps, basement pumps and drains looked after for restaurants, hotels, offices and residential buildings across the West End and Westminster.
Westminster packs more restaurants, hotels, theatres and offices into a few square miles than anywhere else we work. Almost every commercial kitchen needs a grease trap, almost every older building has a basement, and many of those basements depend on a pump to lift waste up to the sewer. That’s the core of our work here.
Drains under the West End are old, busy and often shared between buildings. Mansion blocks in Marylebone, Pimlico and Maida Vale have their own long-standing drainage issues, and new developments come with plant rooms and pump stations that facilities teams need to keep on top of.
Access is part of every job: parking, loading restrictions and working around trading hours. We plan visits early in the morning or overnight where needed. Our crews work in London most days and we answer the phone 24 hours a day.
From Soho kitchens to hotel banqueting suites, we empty grease traps on a schedule that suits your service, often before opening or after closing, and leave a waste transfer note every time for your records.
Learn more
Basements below sewer level rely on pumps. When one fails, a kitchen, plant room or flat can flood quickly. We service basement pump stations, test the floats and alarms, and come out day or night if one stops.
Learn more
We clear blocked drains in restaurants, offices and mansion blocks with high-pressure jetting, then tell you where the problem was and whose drain it’s in.
Learn more
A CCTV survey gives facilities managers and agents a clear record of a building’s drains, with photos and a written report to plan repairs and budgets.
Learn moreLocal knowledge
Old drains, busy kitchens and a lot of basements.
With so many restaurants, fat is the biggest cause of blockages. A maintained grease trap protects your drains and the sewer.
Many buildings have basements below the sewer. Pump stations need regular servicing and a working alarm.
Parking and trading hours shape every visit. We plan early-morning or overnight work where it helps.
Local to you
We cover the whole of Westminster and the neighbouring parts of central London.
Westminster · and neighbourhoods
Surrounding areas · businesses and homes we cover
If you’re anywhere in central London, we cover you. Call with your postcode and we’ll confirm.
Why Westminster customers use us
Whether it’s a hotel grease trap or a basement pump under a Mayfair townhouse, here’s what you can expect.
SafeContractor, Achilles UVDB and RISQS approved, so we can get onto managed sites and meet your contractor checks.
Emergency call-outs 24 hours a day, 365 days a year, with a real person answering the phone.
Tankers from 2,000 to 4,000 gallons, jet/vac combination units, CCTV survey kit and confined space teams for pump station wet wells.
Our engineers and most of our tanker drivers hold current confined space entry certificates, and the engineers carry the most common parts.
A waste transfer note with every collection, and a written report after surveys and services.
Tanks, treatment plants, pump stations, grease traps and drains, all handled by one team.
Checkatrade
From 134 reviews · Read them
From 63 reviews · Read them
Scores as of September 2026
★★★★★Our family have been using Clearmasters for years and are the only choice as far as we are concerned! All the staff are friendly, helpful and accommodating. Couldn’t recommend them highly enough!
Stu Google review
★★★★★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.
★★★★★Work carried out professionally as usual, the only company I'd recommend.
How it works
The same simple process for planned maintenance and emergencies.
Step 1
Call us or book online and tell us what you need. Let us know your opening hours, building access and any loading or parking arrangements.
Step 2
We arrive with the right vehicle and paperwork. It helps if:
Step 3
You get a waste transfer note for anything we take away, and a written report after a survey or service. If it’s a regular job, we’ll remind you when the next one is due.
Free, no-obligation quote
Tell us what you need and we’ll come back with a price for a one-off visit or a maintenance contract. If something’s flooding, call us now.
Questions answered
What restaurants, hotels and facilities managers in Westminster ask us most.
Yes. We regularly work early in the morning or late at night so we don’t disrupt service.
Stop using water that drains to the pump and call 03333 233566. If the pump has failed, we can empty the chamber to stop it overflowing while we fix it.
Since 2011, most shared drains and sewers have been the water company’s responsibility. The section serving only your building is usually yours. We can find the blockage and tell you which it is.
Yes. Surveys and services come with written reports, and every collection comes with a waste transfer note.
We plan the vehicle, route and timing in advance, and use loading bays or suspended bays where needed. Tell us what’s available at your site.
Yes. We answer the phone 24 hours a day, 365 days a year. Call 03333 233566.
Got a different question? Call 03333 233566 or send us a message.
We're independently vetted and certified so you can trust who you're letting onto your site.
Health & safety pre-qualification accreditation, verifying our processes meet recognised safety standards.
Railway Industry Supplier Qualification Scheme — approved to work safely within the rail industry supply chain.
Utilities Vetting Database membership, confirming we meet the utilities sector's supply chain standards.
Vetted and approved under the local authority's trusted trader scheme for honesty and fair dealing.
Members of the National Association of Drainage Contractors, the UK trade body for the drainage industry.
Registered with the Environment Agency, so your waste is handled and disposed of fully within the law.
Keep the site, forms and online booking working, and protect them from spam.
Google Analytics: counts visits and shows us which pages are useful, so we can improve the site.
Meta (Facebook) pixel: measures our Facebook adverts and shows our adverts to people who've visited our site.
CLEARMASTERS