Greater London · TR19 inspections and grease testing
TR19 Inspection in Crooked Billet
For TR19 inspections, grease thickness testing, pre-clean surveys and post-clean verification in Crooked Billet, one call is all it takes: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Post-clean verification after another contractor’s clean
- Kitchen extract systems with no recent grease readings
- Sections of duct that cannot be reached
TR19 inspection in Crooked Billet
A pre-clean survey is the diagnosis, and the clean is the treatment. We look at the system, take grease readings and photograph what we find, so the quote and the clean fit the real system. Typical jobs include cleaning intervals that may not suit the kitchen and systems cleaned on a calendar with no measurements, across insurer audits, wet film thickness tests and post-clean checks.
London kitchens are often tucked into basements or the back of a building, with extract ducts that can climb several floors to discharge at roof level. In Crooked Billet, as elsewhere in the capital, a long duct run means more access points to open and more grease to remove.
Duct Doctor has been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Where
- Crooked Billet (SW19, SW20)
- Region
- Greater London
- Paperwork
- TR19® certificate and photo report
- Price
- Fixed quote, normally within a working day
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Fixed quotes for TR19 inspection in Crooked Billet
Your quote is based on your site. We take into account:
- Site requirements such as sign-in and permits
- Parking and loading at the site
- How big the system is
- Whether several sites go on one quote
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we will go through it with you.
What to send for a quote
You do not need the technical terms. It helps if you can send:
- A few general shots of the system
- The roof, plant room or outside wall the system runs to
- Your opening hours and when the area is out of use
- Your last certificate, test record or report
Want a quote for TR19 inspection? Please phone us on 0345 646 2711 or email us with a few details about the site. We’ll explain what we’d do and send a fixed quote before anything is booked.
When it’s something else
To be straight with you, there are a few things this work won’t fix:
- Parts of the duct nobody can reach yet
- Heavy deposits found on test, which still need cleaning
- Design faults in the extract system
If in doubt, phone us on 0345 646 2711 or send us an email and we’ll say what we think before you book.
Where we work
- Post-clean checks
- Pre-clean surveys
- Access surveys
- Wet film thickness tests
- Deposit thickness tests
- Insurer audits
Leave it or put it right?
Surveying first means the clean goes to plan. Access problems are spotted in advance rather than on the night, and the quote reflects the real job. In a London building, a problem in a duct, damper or fan rarely stays in one unit.
No two sites are the same, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all play a part.
Why us?
- Out-of-hours work and a 24/7 emergency line
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Fixed quotes from a survey or pictures
- In business since 2009
Questions from Crooked Billet
Which council inspects kitchens in Crooked Billet?
Kitchens in Crooked Billet are inspected by Merton council’s environmental health officers. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
Who enforces fire safety at workplaces in Crooked Billet?
London Fire Brigade is the fire and rescue service for Crooked Billet. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Can you look after several sites?
Yes. Tell us the addresses and what each needs and you’ll get one fixed quote.
Is a quote from pictures possible?
Often, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Where we can’t see enough, we arrange a survey.
At what point does grease need cleaning?
Between cleans, the mean should stay at 200 microns or below, and anywhere at 500 microns or more needs spot cleaning right away.
What happens on a pre-clean survey?
We survey, measure and photograph the system first. We can work from pictures and details, or visit, whichever suits the system.
What about areas you cannot get to?
We never leave them off the paperwork. You will know exactly which parts weren’t reached and why, along with a quote to put access in.
Is Crooked Billet in your area?
Yes. Our area takes in London and the counties of South East England, Crooked Billet included.
TR19 inspection in Crooked Billet: the local picture
Food Standards Agency records list about 208 cafés, restaurants and staff canteens and about 32 takeaways and sandwich shops within about 1.5 miles of central Crooked Billet. For any of them with a canopy, measuring grease is better than guessing when to clean. Night work suits London kitchens, and roads and loading bays tend to be quieter too. Kitchens in Crooked Billet get their food hygiene inspections from Merton council. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Before-and-after pictures from each clean are a simple way to show the extract is in hand.
If you cook for passing trade around Raynes Park station, the extract can be cleaned between your last and first customer. A hall kitchen that only cooks for events, whether near Christ Church or elsewhere in Crooked Billet, still needs its extract cleaned, just less often.
Crooked Billet is about 1 mile west of Wimbledon, in Greater London. If you need TR19 inspection in Crooked Billet, it’s easy to get a fixed quote: please give us a ring on 0345 646 2711 or drop us a line. We work across South East England and London, including Crooked Billet. Crooked Billet is one of 764 places in Greater London where we work for commercial clients. There’s also a page for London, about 8 miles away.
All of SW19 and SW20 is covered for TR19 inspection, from busy streets to back roads. Streets in the area include Camp Road, Mckay Road and Pepys Road, and we cover them all for TR19 inspection. If your site is just outside Crooked Billet, we cover Copse Hill (1 mile south-west), Wimbledon (1 mile east), Bushey Mead (1 mile south), Wimbledon Chase (1 mile south-east) and Kingston Vale (1 mile north-west). Larger places within reach include London (8 miles north-east), City of Westminster (7 miles north-east), Marylebone (8 miles north-east), Kensington (6 miles north), St Pancras (9 miles north-east) and Shoreditch (10 miles north-east).
What’s near Crooked Billet
We work in commercial kitchens and buildings around Hollymount School, Cannizaro Park and Ursuline Preparatory School and the streets around them. For rail, the closest station is Raynes Park station, roughly 0.9 miles south. A little further out are Southside Wandsworth (2.7 miles north-east) and Wimbledon Museum (0.5 miles east). The countryside around Crooked Billet includes Kew Gardens Lake and Henman Hill.
Staff cleaning versus specialist work
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Landlords, agents and facilities managers
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. With shared responsibility, good records help everyone.
Whether it’s one building or many, the standard is the same: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
How it works
The first job on site is protection: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. The work on site takes a morning or less for one kitchen, more where there are several systems, and the area is cleaned down before we leave. Expect the work in Crooked Billet to happen after your last customer leaves, not during trading.
- Post-clean verification is booked once the clean is done.
- The same access points are opened up.
- Grease readings are taken again at set points.
- Photos are taken to show the condition after the clean.
- We report the findings and flag any areas that need more work.
Before we arrive
- Tell us where we can park and unload
- Tell us about site rules, permits or sign-in
- Dig out any earlier paperwork for the system
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, the quote is fixed before any work is booked.
Read more
Signs you need TR19 inspection in Crooked Billet
When a site in Crooked Billet changes owner or cleaning contractor, the records do not always follow. Without them, nobody knows how much grease is in the system or when it was last cleaned.
What we’re most often called out for:
- Parts of the system left out of past cleans
- Cleaning intervals that may not suit the kitchen
- Heavy grease suspected in the plenum or ducts
- An insurer’s request for a TR19 audit
If you look after a school kitchen, at a school such as Wimbledon College or anywhere near Crooked Billet, the holidays are the usual time for a TR19® clean.
Before booking anyone
- Which accreditations they hold, and whether you can check them
- When they can work, and whether that is outside your opening hours
- How they set the interval to the next visit
- Whether the price is fixed