The Leeds Castle Estate is a premier heritage, tourism, and hospitality venue encompassing 500 acres of historic parkland in Kent and operates as a multi-purpose commercial venture managed by the Leeds Castle Foundation. The core business infrastructure integrates historical preservation, international tourism, outdoor leisure, and luxury accommodation

Services Provided:

Kitchen extract system cleaning and passive fire services.

Region & Sites: 1 (Southeast)

Contract Overview & Service Delivery:

We have been working successfully with the site for 13 years providing kitchen extract system cleaning to all eateries and restaurants across the castle estate, as well as ventilation systems advise.

In addition, we provide passive fire expertise, specifically around fire doors and compartmentation within a heritage site.

Using predictive data to monitor deposit levels within the kitchen extract systems, we schedule essential cleaning works throughout the year, well in advance of non-conformity and ensuring minimal disruption to site operations.
100% compliance to BESA TR19 standards

Port Lympne Hotel & Reserve is a 600-acre wildlife park and breeding sanctuary, and Howletts Wild Animal Park is a 90-acre wildlife sanctuary. Both sites are managed by The Aspinall Foundation.

Services Provided:

Kitchen extract system cleaning across all eateries and restaurants at Port Lympne and Howletts.

Region & Sites: 2 (Southeast)

Contract Overview & Service Delivery:

We were successfully awarded a 3-year contract to provide kitchen extract system cleaning and ventilation systems advise.

Using our mobile workforce management system, attendances are scheduled across both sites with allocated dates and resource every 6 months. The client has full access to the client portal showing all work information (start & finish times, pre & post clean photographic evidence of works, job cards & TR19 certification) ensuring buildings insurance validity with a fully accountable and traceable process.

Job Type: Commercial Kitchen Extract Cleaning

Site details: A popular restaurant at a Kent wildlife park.

Special features: System comprises of one canopy hood (1.5 x 1 x 0.8)m and 3 Baffle Filters with approximately 3 metres of extract ductwork and a large extract fan unit.

Due to the type of cooking carried out at this site, this system is cleaned on an annual basis.ses of one canopy hood (3 x 2.5 x 0.5)m and 10 Mesh Filters with approximately 6 metres of extract ductwork and a medium, external discharge extract fan unit.

Due to the type of cooking carried out at this site, this system is cleaned on an annual basis.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 400 microns, ductwork from canopy 800 microns and fan unit 800 microns. The discharge riser ductwork 600 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. We discovered that the current mesh grease filters were no longer fit for purpose and require replacing and we also recommended that cleaning continued at the recommended intervals.

Job Type: Commercial Kitchen Extract Cleaning

Site details: A city centre Junior School.

Special features: System comprises of one canopy hood (3 x 2.5 x 0.5)m and 10 Mesh Filters with approximately 6 metres of extract ductwork and a medium, external discharge extract fan unit.

Due to the type of cooking carried out at this site, this system is cleaned on an annual basis.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 150 microns, ductwork from canopy 200 microns and fan unit 300 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. We discovered that the current mesh grease filters were no longer fit for purpose and require replacing and we also recommended that cleaning continued at the recommended intervals.

Job Type: Commercial Kitchen Extract Cleaning

Site details: A contemporary family run bistro.

Special features: System comprises of one canopy hood (2 x 1 x 0.5)m with approximately 3 metres of extract ductwork and a medium extract fan unit.

Due to the amount of cooking carried out at this site, this system is cleaned on a 6 monthly basis

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 600 microns, ductwork from canopy 400 microns, fan unit 200 microns and ductwork after fan unit 400 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. No faults or recommendations other than continued cleaning at the recommended intervals.

Job Type: Commercial Kitchen Extract Cleaning

Site details: Beautifully kept 17th Century country pub based in Southdowns.

Special features: System comprises of one canopy hood (2.5 x 1 x 0.5)m2 with approximately 1 metre of extract ductwork and a medium fan unit.

Due to the amount of cooking carried out at this site, this system is cleaned on a 6 monthly basis.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 375 microns, ductwork from canopy 800 microns, fan unit 383 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. No faults or recommendations other than continued cleaning at the recommended intervals.

Job Type: Commercial Kitchen Extract Cleaning

Site details: Modern cuisine based in an idyllic area and overlooking the Thames Estuary.

Special features: System comprises of one canopy hood (4 x 1 x 0.3)m2 with 6 Baffle grease filters, approximately 5 metre of extract ductwork and a medium size roof mounted fan unit.

Due to the amount of cooking carried out at this site, this system is cleaned annually.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 100 microns, ductwork from canopy 800 microns, fan unit 700 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. During the cleaning works we discovered that a large section of the riser ductwork contained Flexi-duct. It could not be confirmed if this section was fire rated or not. It was recommended to the client that this section be replaced with appropriate fire rated materials to prevent the spread of Fire.

Job Type: Commercial Kitchen Extract Cleaning

Site details: Highly popular golf club backing onto the Kentish North Downs.

Speacial features: System comprises of one canopy hood (3.1 x 2.3 x 0.4)m2 with approximately 7 metres of extract ductwork, a second canopy hood (1.2 x 1 x 0.3)m2 with approximately 4 metres of extract ductwork and a third canopy hood (1.5 x 1.2 x 0.5)m2 with approximately 7 metres of extract ductwork and a large fan unit.

With the amount of cooking carried out at this site, this system is cleaned on a 12 monthly basis.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 200 microns, ductwork from canopy 600 microns, fan unit 500 microns, ductwork after fan unit 500 microns, and discharge riser ductwork 500 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. No faults or recommendations other than continued cleaning at the recommended intervals.

Job Type: Commercial Kitchen Extract Cleaning

Site details: Highly popular historic country pub.

Speacial features: System comprises of one canopy hood (3 x 1.5 x 0.5)m2 with approximately 10 metres of extract ductwork and fan unit.

The system operates under extremely high grease load and temperature. Due to the amount of cooking carried out at this site, this system is cleaned on a 6 monthly basis.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Canopy 800 microns, ductwork from canopy 800 microns, fan unit 800 microns, ductwork after fan unit 800 microns.
4. The work was carried out successfully by degreasing and deep cleaning the canopy, grease filters and the internal surfaces of the associated ductwork.
5. All areas were thoroughly cleaned with results below 50 microns.
6. No faults or recommendations other than continued cleaning at the recommended intervals.

Job Type: Commercial Kitchen Extract Cleaning.

Site details: Main kitchen for a farmers market with onsite restaurant which uses the local market produce.

Special features: This system comprises of 2.5 metres of ductwork from the canopy to a large externally mounted fan unit.

The system operates under high grease load and temperature. Due to the varying types of cooking, this system is cleaned on a 6 monthly basis.

1. Kitchen Extract Systems have an increased fire, odour, vermin & hygiene risk compared to general supply and extract systems. This is due to the grease build up acting as a potential ignition source, contributed by the heat in the kitchen, possibly elevated oxygen levels from a fresh air supply source and the general deposition of cooking oils on ventilation system components and the ductwork itself acting as fuel.
2. Wet Film Thickness Tests (WFTT) were carried out at various locations throughout the system, to determine the overall level of grease deposition. Individual readings of over 50 microns are deemed unclean. An average reading across the system of 200 microns or more is deemed unclean. Any individual readings in excess of 500 microns require immediate attention. In accordance with BESA TR19, tests were carried out at the following locations (where accessible).
3. The WFTT readings pre clean were as follows: Ductwork from canopy 800 microns, fan unit 800 microns.
4. The work was carried out successfully by degreasing and deep cleaning the Fan unit and the internal surfaces of the associated ductwork.
5. All areas were properly cleaned with results below 50 microns.
6. During the cleaning works we discovered that the discharge for the extract fan unit had no collection tray. We recommended that a removable drip tray is to be installed to catch all the grease discharge and to reduce the fire risk. Continued cleaning at the recommended intervals will also be necessary.