Greater London · Grease trap cleaning
Grease trap cleaning in Mill Hill, Greater London
We cover Mill Hill for grease trap cleaning. Fixed quotes, work around your opening hours and photo reports as standard.
- A slow-draining kitchen sink
- A small trap that fills too quickly
- Grease setting in the kitchen pipework
Grease trap cleaning for kitchens and businesses in Mill Hill
If the sinks drain slowly or smell, the trap is often the cause. In Mill Hill, as everywhere we work, our team empties and cleans the trap, then check the water flows properly. The work covers pot wash sinks, school and care home kitchens and under-sink grease traps, and people most often call us about an overdue grease trap and drains clogged with fat.
Fat, oil and grease poured down drains helps form fatbergs, and London’s sewers have made the news for them more than once. A grease trap that’s emptied and cleaned regularly keeps fat out of the drains.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Place
- Mill Hill (NW7, N20)
- Wider area
- Greater London
- Reporting
- Report and photos after the visit
- Price
- Fixed quote, typically within a working day
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Checked
- 30 October 2026
What a clean won’t put right
Before booking, it helps to know what’s not included:
- Grease deep in the drains, which needs jetting by a drainage contractor
- Leaking pipework or sink wastes, which need a plumber
- A trap undersized for the amount of cooking
If you are not sure, just phone us on 0345 646 2711 or send us an email and we will give you a straight answer before you book.
What the work covers
- Pot wash sinks
- Inline grease traps
- Restaurants and takeaways
- Under-sink grease traps
- Kitchen waste pipes
- School and care home kitchens
Nearby places to Mill Hill
More services for Mill Hill
Do you need grease trap cleaning in Mill Hill?
Hot washing-up water keeps grease liquid for a while. Once it cools, it sets in the pipework or the drain.
Signs it’s time to call us include:
- Foul odours from the grease trap
- Sinks that drain slowly
- A regular cleaning plan for the grease trap
- An inline trap or interceptor due for cleaning
If you run event catering at a historic house or estate in the area (Heath Hall is about 4 miles south-east), a deep clean before or after the busy season is worth planning.
Comparing quotes
- Whether the price is fixed
- What paperwork you get at the end
- Proof of insurance
- Whether a survey comes first
Questions from Mill Hill
Which council inspects kitchens in Mill Hill?
That’s Barnet council, whose environmental health officers carry out food hygiene inspections in Mill Hill. Photos from a deep clean are a simple record of what was done and when.
Can you work in school kitchens in Mill Hill during the holidays?
Yes, out-of-term visits are normal for schools. Around Mill Hill, the Food Standards Agency lists about 29 schools and colleges with registered kitchens within a mile and a half or so. Booking early in the term gives the best choice of holiday dates.
What does TR19 mean?
TR19® is the BESA specification for keeping ventilation systems clean. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Which accreditations do you hold?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Do you work in Mill Hill?
Yes. Mill Hill is part of the area we cover, within the South East and London area we cover.
Do we need to stop using the sinks while you work?
For the length of the clean, yes. The clean takes an hour or so for an under-sink trap, longer for a larger unit, and we time it to suit you.
Do you work with multi-site operators?
Yes. You deal with one contact for every site in our area, with visits on a regular schedule.
Are you insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
Keeping the system healthy
Looking after the system between visits is straightforward, and it helps at the next visit:
- Tell us if your menu or hours change
- Report slow or smelly sinks early
- Do not rely on hot water to clear grease
- Get food waste into the bin, not the sink
Scrape plates into the bin before washing up. Sink strainers help catch solids so less solid waste gets through.
A trap that’s left too long stops catching grease. Regular emptying keeps it working and saves a call-out for a blocked drain.
What affects the quote in Mill Hill
The price is fixed before any work begins. It takes into account:
- The condition of the system
- Whether several sites go on one quote
- How easy every part is to reach
- Site requirements such as sign-in and permits
What you pay depends on the size of the system, the condition it’s in and access to every part of it. We give you a fixed price before any work starts, so there are no surprises.
What to send for a quote
Many jobs can be priced from photos and some basics. Send what you can of the following:
- How we’d reach plant on a roof or in a plant room
- Close-ups of filters, grilles, hatches or access panels
- Any symptoms, from odd noises to smells or leaks
- The paperwork from the last visit, if you have it
We do not publish a price list, because no two systems are the same. We look at your system first, from photos or on a visit, and then give you a fixed quote. To get going, call us on 0345 646 2711, or email photos.
What your team can do, and what needs us
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That is our job.
What happens on the day
The visit has three parts: set-up, the treatment itself and the sign-off. Getting ready means protecting surfaces and switching off what needs to be off, while signing off means the written report and photos. The middle part takes longest, and that takes anything from under an hour to a few hours, depending on the trap. A name and number for whoever controls access to the building in Mill Hill saves time on the night.
- First, we find the trap and look at its connections.
- Sinks feeding the trap are taken out of use.
- We empty out the fat, oil, grease and solids.
- We clean every part of the inside.
- The trap is refitted, tested with water and the waste taken away.
Before we arrive
- Let us know about parking and loading
- Arrange a key holder or contact on site
- Have your last certificate or report to hand
Getting a quote
Some systems can be priced from photos; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before work begins.
Advice
How the job changes from site to site
Grease interceptors
Grease interceptors are larger units that serve busier kitchens. They hold more grease and solids but they still need cleaning.
Restaurant and takeaway kitchens
Busy kitchens with lots of washing-up fill traps fast. They often need the most frequent cleaning.
Mill Hill kitchens: local notes
Look up Mill Hill on the FSA’s food hygiene register and you will find about 46 restaurants, cafés and works canteens and about 21 takeaways and sandwich shops in Mill Hill and the streets around it, up to about 1.5 miles out. Fat from washing up sets hard in pipes, and kitchens like these produce plenty of it. Kitchens in Mill Hill get their food hygiene inspections from Barnet council. They look at the cleanliness of the whole kitchen: walls, floors, ceilings and equipment. A cleaning log that includes deep cleans and grease trap visits shows the work is planned. Night work is normal for London kitchens, and the kitchen is handed back ready for the morning.
Healthcare kitchens cook through the year, so a deep clean has to be fitted around meals; Edgware Community Hospital, about 2 miles south-west, is the nearest hospital to Mill Hill. Hall kitchens near St Paul's Church or elsewhere in Mill Hill may have older sinks and drains, so a grease trap check is worth adding to a deep clean.
Mill Hill is about 1 mile north-east of Burnt Oak, in Greater London. We carry out grease trap cleaning for commercial premises of every kind in Mill Hill and the rest of Greater London. Our area takes in 764 places across Greater London, from busy centres to quieter spots. We also work in London, around 10 miles away.
Here we cover the NW7 and N20 postcode area for grease trap cleaning. If you need grease trap cleaning at premises on Daws Lane, Byron Road and High Street or a nearby road, we can help. We also cover the places around Mill Hill: The Hale (1 mile west), Burnt Oak (1 mile south-west), Grahame Park (1 mile south), Totteridge (2 miles north-east) and Edgware (2 miles west). Within a short drive, we also cover London (10 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (8 miles south), St Pancras (8 miles south-east) and Shoreditch (9 miles south-east).
Near you in Mill Hill
Typical jobs here are in premises near Mill Hill School, Copthall School and Bittacy Hill Park. Other local landmarks include Francis Skaryna Belarusian Library and Museum (2 miles east) and Rising Sun pub (0.7 miles north-west). The closest station to Mill Hill is Mill Hill Broadway station, about 1 mile south-west of the centre. Other landmarks nearby include Broadwalk Centre (2 miles west) and Francis Skaryna Belarusian Library and Museum (2 miles east). Green spaces nearby include The Mill Field and Darland's Lake.