Greater London · Grease trap cleaning
Grease trap cleaning in Barnet, Greater London
Professional grease trap cleaning in and around Barnet, booked around your opening hours and signed off in writing with photos.
- A grease trap that hasn’t been emptied in a long time
- Drains clogged with fat
- Sinks that drain slowly
Keeping the system healthy
So the system stays in good health:
- Mention any increase in cooking
- Do not wait for a blockage to book a clean
- Get food waste into the bin, not the sink
- Keep waste oil out of the drains
You will get our view on how often the trap needs cleaning. That depends on how quickly it filled and how busy the kitchen is.
If the kitchen has got busier, the trap fills faster. Booking cleans more often keeps the drains flowing.
Grease trap cleaning for kitchens and businesses in Barnet
Grease is behind most blocked kitchen drains. Further on, grease can build into fatbergs in the sewer. A well-maintained trap keeps them out of the drains. If you are dealing with a regular cleaning plan for the grease trap and foul odours from the grease trap, we can help, from school and care home kitchens, under-sink grease traps and kitchen waste pipes onwards.
Across London, many commercial kitchens are compact and run long hours, so grease collects behind equipment, on ceilings and in drains and grease traps. In Barnet, deep cleans and grease trap work are typically done overnight.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Place
- Barnet (EN5, EN4, N20, N11)
- Region
- Greater London
- Records
- Written report with photos
- Price
- A fixed quote up front
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
What we do, step by step
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool before any work starts, and the area around the work is covered and protected. On site, it takes less than an hour for many under-sink units. Security desks and permits-to-work are routine in London, so let us know what your building in Barnet needs from us.
- We find the trap and check how it’s connected.
- We ask for the sinks that drain into the trap not to be used.
- We take out the layer of fat, oil and grease and any solids.
- We clean the chambers, baffles and connections.
- The trap is reassembled, checked for leaks and the waste taken away.
Getting ready for the visit
- Dig out any earlier paperwork for the system
- Arrange a key holder or contact on site
- Make sure equipment near the work can be switched off and left to cool
Get a fixed quote
We don’t publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To get going, ring 0345 646 2711 or use the quote form.
Related advice
Questions from Barnet
Can you work in Barnet outside opening hours?
Yes, out-of-hours work is a big part of what we do. The work in Barnet can fit around your hours. Let us know the hours you’re closed and we will book within them.
Do you work in school kitchens around Barnet out of term?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 36 schools and colleges with food registrations within roughly a mile and a half of Barnet. Tell us your holiday dates and we’ll book the visit for when the site is empty.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we will talk you through the next steps.
Who has the legal duty for fire safety?
The law calls them the responsible person. It’s normally the employer, or whoever controls the building, and in shared buildings more than one person can have duties. Your lease and fire risk assessment should make it clear.
What accreditations do you have?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so we can schedule a run of sites on one programme. Every site has its own report.
Do we need to close while you work?
Not usually. The area we are working in has to be out of use while we’re there, so we book a time when it would be closed anyway.
What happens to the waste?
It leaves the site with us at the end of the visit. During the work, it’s contained to keep the area clean.
Staff cleaning versus specialist work
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
Managing agents and facilities teams in Barnet
Multi-site operators often want one contractor and one number. We cover South East England and London, so visits at different addresses can be planned together and kept on a regular cycle.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
Why act early in Barnet
For a kitchen in Barnet, a regular grease trap clean is a small, planned job. Waiting for a blockage turns it into an urgent problem, often at a busy time. It’s better booked as a planned job in Barnet than handled as an emergency.
The cost depends on the size of the system, what state it’s in and how easy it is to reach. You get a fixed price before work begins, so there are no surprises.
Why Barnet businesses choose us
- Trading since 2009
- Full insurance on every job
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
What we’re called out for in Barnet
For a kitchen in Barnet or anywhere else, the trap is out of sight and out of mind. Tucked away under the sink or below the floor it’s often left until there’s a problem.
Look out for these warning signs:
- An inline trap or interceptor due for cleaning
- A blocked kitchen drain caused by grease
- Gurgling from the sink waste
- A slow-draining kitchen sink
Hall kitchens near St John's United Reformed Church or elsewhere in Barnet may have older sinks and drains, so a grease trap check is worth adding to a deep clean.
Before booking anyone
- Whether the quote shows VAT
- Whether the price is fixed
- What hours they’ll be on site
- Proof of accreditation you can verify
Commercial kitchens in Barnet
According to Food Standards Agency records, there are about 32 pubs and bars within roughly a mile and a half of the centre of Barnet. Where they run a kitchen, it needs the same deep cleaning and grease trap care as any restaurant. Kitchens in Barnet get their food hygiene inspections from Barnet council. Walls, floors, ceilings and equipment are all part of what they look at. Keeping a record of deep cleans and grease trap visits helps at inspection time. Night work is normal for London kitchens, and the kitchen is handed back ready for the morning.
School kitchens, at schools like Grasvenor Avenue Infant School for example, normally have their deep cleans and grease trap work done while the canteen is closed. Healthcare kitchens, like those at hospitals such as Barnet General Hospital (about 1.2 miles west), cook for long hours, so deep cleans and grease trap work are planned around patients’ meals.
Barnet is about 9 miles east of Watford, in Greater London. Whatever kind of site you run in Barnet, grease trap cleaning is something we can help with. We can work out of hours so trading is not interrupted. 764 places in Greater London are on our list, large and small. There’s also a page for London, roughly 11 miles from Barnet.
All of EN5, EN4, N20 and N11 is within our area for grease trap cleaning, from busy streets to back roads. Local streets include Station Road, High Street and Sambroke Square, and we cover them all for grease trap cleaning. With the B193 and A1081 close by, Barnet is easy for our technicians to reach for grease trap cleaning. Other places close to Barnet include Underhill (1 mile west), New Barnet (1 mile east), Monken Hadley (1 mile north-west), Hadley Wood (1 mile north-east) and Cockfosters (1 mile east). Larger places within reach include London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (9 miles south) and Shoreditch (10 miles south-east).
Local landmarks in Barnet
Locally, jobs take us to businesses close to Queen Elizabeth's Girls' School, The Railway Tavern and Highlands Gardens. Barnet’s nearest station is New Barnet station, roughly 0.6 miles east. Well-known places in the area include Barnet General Hospital (1.2 miles west) and Francis Skaryna Belarusian Library and Museum (2.1 miles south). Not far away are Darland's Lake and Greenhill Gardens.
Other services in Barnet
When it’s something else
We’ll always give you a straight diagnosis, so here’s what this work cannot put right:
- A trap undersized for the amount of cooking
- Drains that need jetting rather than trap cleaning
- Broken pipework below ground
If you are not sure, just call us on 0345 646 2711 or email us and we’ll give you a straight answer.
Where we work
- Under-sink grease traps
- School and care home kitchens
- Restaurants and takeaways
- Kitchen waste pipes
- Pot wash sinks
- Inline grease traps