City of London · Grease filter exchange

Grease Filter Exchange in City of London

Grease filter exchange for commercial sites in City of London. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.

  • Hand-washed filters that still look greasy
  • Gaps where filters have been removed
  • Grease filters clogged with grease

Grease filter exchange across City of London

Grease filter exchange in City of London, done properly

An exchange visit in City of London does not take long. We lift out the dirty filters and fit a clean set and make sure there are no gaps between them. Anything that needs attention is pointed out. We’re often asked to deal with blocked baffle filters and bent or damaged filters that don’t sit properly, on school and hospital kitchens, island canopies and mesh filters.

In a London area like City of London, a kitchen extract often passes through shared space on its way out: a riser, a service void, the floors above. Grease in a duct like that is a fire risk to the whole building, not just the kitchen, so a regular TR19® clean protects everyone in it.

The report is your system’s health record: a dated account with pictures of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.

Location
City of London (EC4V, EC1A, EC2M, EC2Y)
Wider area
City of London
Reporting
Photo report after every visit
Price
A fixed price before work begins
Hours
Nights, weekends or holidays to suit you
Telephone
0345 646 2711
Page updated
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

For landlords and multi-site operators

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.

Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.

Grease filter exchange around City of London

The FSA’s data shows about 545 pubs, bars and clubs and about 129 hotels and B&Bs registered in and around City of London, up to about a mile and a half out. Where they serve hot food, their kitchen extracts need cleaning to TR19® like any restaurant’s. Food hygiene inspections in City of London are the job of the City of London Corporation’s environmental health team. Extraction counts as kitchen equipment, so its condition can come up on the day. Our report lists what was cleaned and when, which is useful to have ready. Fire safety in City of London falls to London Fire Brigade. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk.

For schools such as Fashion Retail Academy, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed. Commuter trade near London Cannon Street station can mean long cooking hours, and long hours put a kitchen into BESA’s more frequent cleaning bands.

City of London is about 1 mile north of London, in City of London. Whatever kind of site you run in City of London, grease filter exchange is something we can help with. Visits can be booked for evenings, overnight or weekends so trading is not interrupted.

Work in EC4V, EC1A, EC2M and EC2Y is surveyed, quoted and booked the same way as anywhere else. You will find streets such as Aldermanbury Square, Monkwell Square and Paternoster Square, all of which we cover for grease filter exchange. Main roads around City of London include the A1 and A3, which makes travel easy for grease filter exchange. If your site is just outside City of London, we cover Barbican Estate (1 mile north), Bishopsgate (1 mile east), Finsbury (1 mile north), Aldgate (1 mile east) and St Luke's (1 mile north).

Around City of London

Around City of London, our work takes us to kitchens and buildings near St Mary-at-Hill, Prior Weston Primary School and Children's Centre and Golden Fleece pub. You will also find Central Foundation Boys' School (0.8 miles north), Barts Health Archives (less than half a mile north-west) and St Alphage Garden (less than half a mile north). City of London has its own railway station: London Cannon Street station. Well-known places in the area include Gabriel's Wharf (0.8 miles south-west) and London Mithraeum (under half a mile south). Open spaces near City of London include St. James's Park Lake and Barnsbury Wood.

Map of City of London © OpenStreetMap contributors

What affects the cost of grease filter exchange

You will get a fixed price before we start. It’s based on:

  • Access, including roofs, risers and ceiling voids
  • The scale of the work
  • Site rules, permits and inductions
  • Working hours and out-of-hours timing

One small site or a whole estate, we price it on the same basis: what needs doing, how we get to it and when. The price is fixed before we start.

What to send for a quote

When you contact us, it’s useful to have:

  • The times we could work without disrupting the site
  • Any symptoms, from odd noises to smells or leaks
  • The site address and the type of premises
  • How we’d reach plant on a roof or in a plant room

Every quote begins with a look at the system, from your pictures and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work, before we start.

Between visits

Once we’ve finished, these simple steps help:

  • Don’t let the full clean slip because filters are changed
  • Look out for drips from the canopy
  • Keep the extract on whenever the range is in use
  • Mention it if the kitchen gets busier

There’s no waiting: the canopy is ready as soon as the clean set is fitted. The dirty set leaves with us for cleaning.

Damaged filters leave gaps in the defence. Replacing them early protects the plenum and ductwork.

What we do, step by step

When we arrive, we check the system against the survey or the photos you sent. If anything is different, we talk it through with the person on site before carrying on. After that, the work takes anything from a few minutes to an hour or so, depending on the number of filters. For a job in City of London, tell us about loading bays, permits, lifts and roof access when you book.

  1. The filters in each canopy are measured and counted.
  2. We set the interval with you.
  3. On each visit, we remove the greasy filters.
  4. A clean set is fitted and checked for gaps.
  5. We take the greasy set away and confirm the next date.

Getting ready for the visit

  • Mention any locked doors, roof access or ceiling voids
  • Make sure equipment near the work can be switched off and left to cool
  • Arrange a key holder or contact on site

Getting a quote

Need a price for grease filter exchange? Please give us a ring on 0345 646 2711 or use the quote form and tell us about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.

Get a quick quote

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What we are called out for in City of London

Wherever you are, City of London included, filter washing is the job that gets skipped when the kitchen is busy. It only takes a couple of missed weeks for a filter bank to clog.

The symptoms we’re asked about most are:

  • A canopy that drips grease
  • Staff short of time to wash filters
  • Missing filters in the filter bank
  • Poor airflow through the filters

A hall kitchen that only cooks for events, whether near St Olave Old Jewry or elsewhere in City of London, still needs its extract cleaned, just less often.

Questions to ask before booking

  • If they look at the system before pricing
  • What paperwork you get at the end
  • Whether inaccessible sections are listed on the report
  • What hours they’ll be on site

Questions to ask before you book

What the work involves, part by part

Mesh filters

Mesh filters are still found in many canopies. We exchange them on the same basis as baffles.

Busy restaurant and pub kitchens

The more a kitchen cooks, the more grease the filters see. Regular changes help protect the ductwork.

City of London questions

Which fire service covers City of London?

It’s London Fire Brigade, which covers City of London. A recent cleaning certificate and a note of the next clean date show that grease in the extract is being managed.

Do you clean school canteen extracts around City of London out of term?

Yes. The holidays are the usual time for school work. There are about 90 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of City of London. You can ring 0345 646 2711 or email us with the dates the site is empty.

Which records should we keep?

The reports and certificates from each visit, plus your own logs. Insurers, fire officers and EHOs may all ask to see them, so keep them together and easy to find.

What is TR19?

It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It sets out inspection, cleaning and record keeping and expects a risk-based approach.

Can we skip TR19 cleans if the filters are changed regularly?

It does not. Some grease passes the filters as vapour and settles in the ducts and the whole system still needs its TR19 clean.

Do you offer maintenance contracts?

Yes. We run scheduled maintenance contracts, set at the interval the system needs. The report from each visit recommends the next date.

Do you offer emergency callouts?

Yes, 24/7. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.

Does the report say when we need you again?

Yes. The report recommends when the next visit should be, based on use and what we found.

What grease filter exchange cannot fix

In fairness, some problems need a different fix:

  • An extract that was undersized from the start
  • A fan that’s failing or too weak for the system
  • Grease deep in the extract system

Not sure which it is? You can call 0345 646 2711 or send us an email and we’ll tell you honestly before booking.

What the work covers

  • Mesh filters
  • Restaurants and pubs
  • Wall canopies
  • Island canopies
  • School and hospital kitchens
  • Baffle filters
BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London