Greater London · TR19 inspections and grease testing
TR19 inspections and grease testing in St Margarets, Greater London
One call covers TR19 inspections and grease testing in St Margarets: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Missing TR19 certificates or history
- Systems cleaned on a calendar with no measurements
- Insurers asking for TR19 evidence
How we handle TR19 inspection in St Margarets
A grease test measures how thick the grease is inside a kitchen extract system. We use the Wet Film Thickness Test (WFTT) or the Deposit Thickness Test (DTT), taking readings at set points. From the numbers, you can see whether cleaning is due. The work covers deposit thickness tests, wet film thickness tests and access surveys, and common reasons people get in touch are uncertainty over how often to clean and kitchens taken over with no cleaning records.
London kitchens tend to trade late and open early, so work in St Margarets is normally booked for the night or the early hours. Before the clean, we agree loading, parking and roof access with whoever manages the building.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. We are also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Place
- St Margarets (TW1, TW7, TW9)
- Region
- Greater London
- Paperwork
- TR19® certificate and photo report
- Quote
- A fixed quote up front
- Working hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Common problems we fix in St Margarets
TR19® is the benchmark that insurers, fire officers and EHOs refer to. It is not legislation; the legal duty comes from the Fire Safety Order 2005, under which the responsible person must reduce fire risk, and grease in the extract is part of that risk.
Any of these means the system needs a check-up:
- Sites with gaps in their extract records
- Systems that need surveying before cleaning
- Systems cleaned on a calendar with no measurements
- Uncertainty over how often to clean
For schools such as Worple Primary School, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed.
Before booking anyone
- What happens if part of the system can’t be accessed
- Whether a survey comes first
- How VAT is shown on the quote
- Whether the price is fixed
Looking after it afterwards
Simple habits between visits make a real difference. We recommend:
- Do not box in or cover duct access panels
- Send TR19 audit reports to your insurer on request
- Flag changes in how much frying the kitchen does
- Flag oily drips near the extract
Readings of 500 microns or more are highlighted as needing immediate spot cleaning, and we can quote to do it.
Regular grease readings keep the cleaning interval honest. It shows if build-up is speeding up.
Towns and villages near St Margarets
More services for St Margarets
Staff cleaning versus specialist work
Staff cleaning and specialist work are not the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but they don’t reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.
What happens on the day
We work around your opening hours, not the other way round. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the job takes around an hour or two per canopy and duct system. Managed blocks in London often need contractors booked in ahead, and we are happy to deal with the agent directly for a site in St Margarets.
- First we look at the system’s cleaning history, if there is one.
- We follow the extract from canopy to discharge.
- Access panels are located and any missing ones noted.
- We measure the grease and photograph each point.
- We report back with readings and a fixed quote.
How to prepare
- Mention any sign-in, permit or induction we need
- Make sure equipment near the work can be switched off and left to cool
- Dig out any earlier paperwork for the system
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before work begins.
Read more
Why it’s worth doing now in St Margarets
An EHO visit, an insurance renewal or a fire risk assessment is a bad time to find your extract records are thin. A recent inspection report means you’re ready when asked. For a site in St Margarets, fitting the work in overnight now is far easier than closing at short notice later.
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered, and you will get one fixed quote.
Why choose Duct Doctor in St Margarets
- We diagnose before we treat
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- A fixed price before any work starts
- Full insurance on every job
See how cleaning jobs are priced and how to check a contractor.
When it’s something else
We’ll always give you a straight diagnosis, so here’s what TR19 inspection will not do:
- Installation problems, which fall under design guidance such as DW172
- Sections with no access, until panels are fitted
- The legal duty, which stays with the responsible person
Not sure which it is? You can phone us on 0345 646 2711 or drop us a line and we will tell you honestly.
Where we work
- Deposit thickness tests
- Insurer audits
- Post-clean checks
- Access surveys
- Wet film thickness tests
- Pre-clean surveys
Part by part
Vertical risers
In buildings with several floors, the riser may pass through other tenants’ space, so we arrange access ahead of time.
Horizontal duct runs
If a run has no access panel, we note it so panels can be added.
TR19 inspection around St Margarets
According to Food Standards Agency records, there are about 55 bars, pubs and nightclubs and about 10 hotels and guest houses within about 1.5 miles of central St Margarets. Breakfasts, bar meals and functions all put grease into the extract wherever they’re cooked. Overnight is the normal time to clean a London kitchen extract, so trading is not affected. St Margarets sits within the area of London Fire Brigade. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
If you run a café or takeaway near St Margarets (London) station, early starts and late finishes leave little time to clean, so overnight extract cleaning suits. Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Richmond House is about 1 mile south), access may need planning.
St Margarets is about 1 mile north-east of Twickenham, in Greater London. Across the TW1 area, we can take on TR19 inspection. We cover 764 places across Greater London, large and small. There’s also a page for London, about 10 miles away.
All of TW1, TW7 and TW9 is within our area for TR19 inspection, from the main roads to the quietest streets. Local streets include Eve Road, Park Road and Crown Road, and we cover them all for TR19 inspection. With the A316 and A3004 close by, St Margarets is easy for our technicians to reach at any hour. If your site is just outside St Margarets, we cover Isleworth (1 mile north-west), Richmond (1 mile east), Ivybridge (1 mile west), Eel Pie Island (1 mile south) and Twickenham (1 mile south-west). We also work in nearby towns such as London (10 miles east), City of Westminster (8 miles north-east), Marylebone (8 miles north-east), Kensington (6 miles north-east), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).
Around St Margarets
Locally, jobs take us to businesses close to Richmond Green, Orleans Park School and The Turks Head pub. There’s a railway station in St Margarets itself: St Margarets (London) station. Well-known places in the area include South Middlesex Hospital (0.8 miles west) and Eel Pie Island Museum (0.8 miles south). Open spaces near St Margarets include Richmond Hill and Ham Lands.
Questions from St Margarets
Can you work in St Margarets outside opening hours?
Yes, we can come after you close and finish before you open. It means the site in St Margarets keeps running as normal. Just call us on 0345 646 2711 or drop us a line with your opening times and we’ll plan around them.
Which council inspects kitchens in St Margarets?
The local authority for St Margarets is Richmond-Upon-Thames council, and its environmental health team does the inspecting. How often a business is inspected depends on the risk rating the council gives it, so it’s worth staying ready all year.
Is TR19 cleaning the law?
No. TR19® is not law; it’s BESA’s specification. The legal duty comes from the Regulatory Reform (Fire Safety) Order 2005, which requires the responsible person to reduce fire risk, and TR19® is what insurers and fire officers look to.
What does TR19 inspection cost?
We don’t publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. We fix the price before we start.
Is St Margarets in your area?
Yes. We work across Greater London, Surrey, Kent, Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex, and that includes St Margarets.
What does TR19 mean?
A BESA specification, with two parts that matter most here: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It isn’t law, but it’s the benchmark.
Do you have a 24/7 line?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we’ll talk you through the next steps.
Where does the waste go?
We contain it and take it with us. We collect grease, debris and waste water as we go, so it doesn’t spread.