Buckinghamshire · TR19 inspections and grease testing
TR19 inspections and grease testing in Nash Lee, Buckinghamshire
Looking for TR19 inspection in Nash Lee? We diagnose first, fix the price and book the work around your hours, then sign off with a report and pictures.
- Confirming a clean reached the whole system
- An insurer’s request for a TR19 audit
- Extracts that have never been grease tested
TR19 inspection around Nash Lee
According to Food Standards Agency records, there are about 9 bars, pubs and nightclubs within about 1.5 miles of central Nash Lee. Any of them serving cooked food has an extract to keep clean, from canopy to discharge. Nash Lee is covered by Buckinghamshire Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises. Kitchens in Nash Lee get their food hygiene inspections from Buckinghamshire council. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Keeping each certificate and photo report on file helps show the extract is looked after.
If you look after a school kitchen, at a school such as John Colet School or anywhere near Nash Lee, the holidays are the usual time for a TR19® clean. Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Nash Lee is Stoke Mandeville Hospital, about 2.3 miles north.
Nash Lee is about 4 miles south-east of Aylesbury, in Buckinghamshire. From the centre of Nash Lee to the outskirts, we cover TR19 inspection for every kind of premises, from small sites to large estates. Our area takes in 263 places across Buckinghamshire, large and small. We also work in Oxford, around 19 miles away.
Our technicians cover all of HP17 for TR19 inspection and the roads nearby. Neighbouring places we cover for TR19 inspection include Terrick (1 mile south), Chalkshire (1 mile south), North Lee (1 mile north-west), Butler's Cross (1 mile south) and Ellesborough (1 mile south). Within a short drive, we also cover Aylesbury (4 miles north-west), High Wycombe (10 miles south), Chesham (8 miles south-east), Marlow (13 miles south), Amersham (10 miles south-east) and Beaconsfield (12 miles south-east).
Landmarks near Nash Lee
We work in commercial kitchens and buildings around The Russell Arms and the streets around them. The nearest railway station is Stoke Mandeville station, roughly 1.4 miles north. Well-known places in the area include Little Kimble Motte (1.5 miles south-west) and National Paralympic Heritage Centre (2.5 miles north). Green spaces nearby include Coombe Hill and Brush Hill Local Nature Reserve.
How we handle TR19 inspection in Nash Lee
Many insurers ask for proof that kitchen extract systems are cleaned and inspected to TR19®. Missing records can lead to a claim being reduced or refused. Our TR19 audits give sites in Nash Lee and across Buckinghamshire a clear record of the system’s condition. If you have pre-clean surveys before a first TR19 clean and uncertainty over how often to clean, we can put it right, from post-clean checks, deposit thickness tests and wet film thickness tests onwards.
Rural kitchens often have long, low duct runs through a roof space or along an outside wall, where grease settles in the flat sections. We agree access and timings in advance.
Duct Doctor has been trading since 2009, as 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
- Nash Lee (HP17)
- Wider area
- Buckinghamshire
- Reporting
- Certificate and photo report
- Quote
- A fixed price before work begins
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026

In-house cleaning or a specialist?
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. Leave those to us.
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.
Why it’s worth doing now in Nash Lee
After an incident, an insurer can ask to see proof of TR19 cleaning and inspection. Missing records can put a claim at risk. Getting an inspection done now starts that paper trail. Systems in rural buildings are often out of sight and out of mind.
You will not find a price list here, because the cost depends on the site in front of us. Call for a fixed quote, and we will talk you through it.
What you get with us
- Fixed quotes, normally within one working day
- One contact for all your sites in London and the South East
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- In business since 2009
How we price TR19 inspection
The diagnosis comes before the price. We look at:
- When the work can happen, such as evenings, overnight or weekends
- What state the system is in
- Where the site is and how we reach it
- A single visit or a regular plan
Leaving it longer rarely makes the work cheaper. Problems in a system tend to grow, which can make the next visit longer. If you’re unsure, phone us on 0345 646 2711 or use the quote form and we will give you an honest view and a fixed quote.
What we need to know
What to send for a quote:
- Your opening hours and when the area is out of use
- The site address and the type of premises
- Photos showing the whole system and its surroundings
- Any previous report or certificate
To get a fixed quote, ring 0345 646 2711 or send us an email and tell us the type of site, your opening hours and roughly what the system looks like. A few pictures and your last certificate or report help a lot. You will normally have a quote within one working day.
Between visits
Once we have finished, these simple steps help:
- Look out for grease drips round the canopy edge
- Do not box in or cover duct access panels
- Clean grease off the canopy between professional cleans
- Clean or swap grease filters as often as the kitchen needs
You get a report with the grease readings, where they were taken and photos of each point. Keep it with your fire safety and TR19 records.
When cooking hours or the menu change, check the interval still fits. Fresh readings show whether it needs to change.
What the work involves, part by part
Extract fan and discharge
The discharge at the end of the system is checked as well, since grease reaches the very end of the system.
Restaurants, pubs and hotels
We test between services, early in the morning or after close so trading is not affected.
How it works
Night work is normal for us. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. On site, the work takes anything from an hour for a small canopy and short duct to a good part of a day for a large site. The timing of a visit to Nash Lee is set by you, and the travel is our side of the planning.
- We go through any past certificates and reports.
- The layout is traced from the canopy to the discharge.
- We note where access panels are and where more are needed.
- Grease readings are taken and pictures recorded.
- We report back with readings and a fixed quote.
Preparing for the visit
- Tell us about site rules, permits or sign-in
- Have your last certificate or report to hand
- Allow time for equipment near the work to be turned off and cool down
How to get a quote
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, you get a fixed price before work begins.
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Nash Lee questions
Will you come out to Nash Lee?
Yes. Villages and rural sites across the South East are part of our work, Nash Lee included. The journey is planned ahead, so a few details about the route help.
Which fire and rescue service is responsible for Nash Lee?
It’s Buckinghamshire Fire and Rescue Service, which covers Nash Lee. TR19® is not law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.
Which sectors do you work in?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
What do the grease readings need to be?
TR19® Grease says the mean shouldn’t exceed 200 microns between cleans, and anywhere at 500 microns or more needs spot cleaning straight away.
How much does TR19 inspection cost in Nash Lee?
There’s no set price, as it depends on the job: the size of the system, its condition, access and when we can work. You get a fixed price before any work starts.
How much notice do you need?
That depends on the slot you want and the size of the job. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
Can you price the work without visiting?
Yes, where the photos show enough. If not, a site survey comes first, then a fixed quote.
What does TR19 mean?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It isn’t law, but it’s the benchmark.
Towns and villages near Nash Lee
Other services in Nash Lee
What we’re called out for in Nash Lee
Insurers, fire officers and environmental health officers look to TR19® as the benchmark. It isn’t legislation; the legal duty comes from the Fire Safety Order 2005, under which the responsible person must reduce fire risk, and in a kitchen that means keeping grease under control.
It’s time to book a visit if you see:
- Heavy grease suspected in the plenum or ducts
- Kitchen extract systems with no recent grease readings
- Uncertainty over how often to clean
- Sections of duct that cannot be reached
If you run a church or community hall kitchen, near Church of St Peter and St Paul or elsewhere in Nash Lee, its extract still collects grease from every lunch and event.
Comparing quotes
- Whether a survey comes first
- Whether the price is fixed
- How they set the interval to the next visit
- Whether VAT is included