Welcome to Crowthorne Group

The UK’s Largest Independent clean air service provider

United Kingdom


Crowthorne have clean air engineers all over the UK available for your emergency and routine fumigation, validation and equipment repair requirements.



Your one-stop shop for clean air engineers provided by Crowthorne and freeze drying specialists from Biopharma Process Systems for our Irish customers.

Rest of the world


Crowthorne can support your clean air equipment around the world maintaining validation of equipment and laboratories. Can we help your overseas facility?

Take a look at our latest video from the Crowthorne Group Directors which provides a quick introductory overview of the company and offers an insight into some of our core services.

Get in touch

Area of product interest - please select from the list below:

How did you hear about us?

Regulatory & Quality Assurance

Keeping your facility up to regulatory standards is our speciality. Commissioning and servicing throughout the UK, available quickly and at competitive prices.

Quality is a priority for Crowthorne – we are keen to ensure your standard operating procedures are supported by our testing protocols and documentation.

  • We regularly use CHTS for cabinet testing before dispatch. They are knowledgeable and informative on standards and are happy to apply this to achieve the best quality for our customers.

    CTS Europe Ltd
  • We are a small HFEA licensed fertility clinic, and we required a service contract for our Class II cabinets and particle monitoring of the background air in our clinical laboratory. We approached CHTS as we had been recommended to them. I was delighted with the efficiency of their customer service, as well as the high standard of technical support we received. We were very impressed by the thoroughness and timeliness of the report following their on-site visit. We feel confident that we have chosen the best company for our needs and would highly recommend them for air quality testing.

    Dr. Sheryl T Homa
  • Crowthorne Hi-Tec Services have provided a service to the East Sussex Trust Pathology department for several years and we have always found their work highly professional. The servicing team are very accommodating regarding dates for the work and the engineers provide an excellent and efficient service.

    East Sussex Healthcare
  • Over the past twenty years, I have been using Crowthorne Hi-Tec Services for the planning of new builds and continuous validation of the Cleanrooms at Xograph Technologies and previously EMS Medical manufacturing sites based in the UK. The advice given during the planning prior to construction and the end result of Cleanroom classification in my opinion has proven to be second to none. My current Cleanrooms operate to ISO 10,000 class 7, which includes a machine processing and a full assembly Cleanroom operate with minimum management required which is put down to the design incorporation airflow ensuring no dead area’s are present. Their engineers are all fully trained and can advise during their routine visit as to potential areas of risk, when changes are forced within the manufacturing environments. I would fully recommend Crowthorne Hi-Tec Services to any present or future prospective Cleanroom room manufacturer.

    N.B. Cant
  •  “The College of Medical and Dental Sciences at the University of Birmingham have been serviced by CHTS for the last 14 years.   The fact that we have not changed suppliers in all of these years, speaks volumes for the service CHTS provide. Their engineers are knowledgeable with the capabilities to develop strong relationships with their customers, their service is trustworthy, they are competitively priced and if emergencies arise they have very good response times.” 

    Dee McLoughlin

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