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ISO Cleanroom was set up by the founder, Toni Horsfield to plug a gap in the market for simple, honest cleanroom support. Quickly joined by her husband Anthony Horsfield, ISO Cleanroom is a proud family business.

I believe that the principles of good cleanroom operations are relatively straight forward and should be accessible to all users. Our aim is to act as your in house cleanroom expert, working hard behind the scenes to take the heat out of your cleanroom management.

Toni Horsfield

Our team of passionate team bring a fresh perspective to your controlled environments with a determination to make your cleanroom projects run as smoothly as possible. We are 100% committed to our customers success.

Awards and accolades

Contamination and control network

The UK cleanroom society CCN is the society for cleanroom, clean air and containment professionals providing a network for knowledge and development through training and education. We are very proud that our CEO Toni Horsfield has been asked to sit on the Contamination and Control Network committee.

The CCN is the key cleanroom society of the UK but also has members all over the world. The qualifications offered by the network are accredited by the CTCB-I and you can find information on those offered here.

North Cheshire Chamber of Commerce Business Award

In 2022 ISO Cleanroom won the prestigious Start Up Business of the year award against very stiff competition of some 100 plus entries. The judging panel consisted of local businesses; Astra Zeneca, Citation and The Chamber of Commerce.

It was a fantastic accolade and acknowledgment of the hard work the whole team had put in during our first years of trading.

Anthony Horsfield - ISO Cleanroom
ISO Cleanroom founder appointed to Contamination Control Network Committee
ISO Cleanroom founder appointed to Contamination Control Network Committee

Toni Horsfield wins Alderley Park Pre-Accelerator Workshop, 2022.

Toni took a fledgling cleanroom design idea focused on start ups and R&D as the customer democratic. It impressed the judges by its customer focus and inception due to a well researched market need. The design is still in development and we are working with Marks & Clerk LLP to secure a patent on the design.

I am so excited to bring this product to market. It is going to help so many people. This is an important part to the future of ISO Cleanroom.

Toni Horsfield

Our Values

  • Helpful
  • Knowledgeable
  • Quality
  • Friendly
  • Creative
  • Safety
  • Clear communication
  • Empathy


At ISO Cleanroom we pride ourselves in our customer focus and cleanroom knowledge. In order for us to best serve our valued customers we believe that we need to be at the forefront of advances in the cleanroom industry.


We believe in lifelong learning and have a full training program using a diverse range of courses and trainings both in person, virtual, individual and as a group.


Quality systems, their implementation and monitoring are vital to the contamination and control industry and promotes a customer lead business.


It might seem trivial to some but it is a fundamental foundation to our culture. All of our team have a friendly and positive demeaner which makes for a positive work environment and a strong support network if things don’t go to plan.


In order to bring a fresh perspective to the clean environment market we value and nurture a pro experimental culture, harnessing the potential to make positive change.


As a construction contractor we are dedicated to safe practice which threads through our procurement, training, management and installation processes.

Clear communication

Our aim is to offer simple and honest advice. We believe that in order to communicate clearly you must know your subject inside and out to break it down to its simplest form. Improving efficiency and reducing customer frustration.


In order for us to be as helpful as possible we need to recognise both the similarities and the differences of another companies culture and practices and tailor our support to suit.

Get in touch

Peter Phillips

I knew of Toni and her team from around 2003 and the days of their Clean Tent business. With a small new business that needed a clean room, I went straight back. Very helpful discussion with Toni led me to choosing a custom lamina flow hood (cheaper!) which was delivered bang on time, immediately passed an ISO 1385 audit and has been cheerfully maintained ever since. I'd go back to ISOClean because they know their stuff and do what they say.


ISO Cleanroom were very easy and practical to work with. Both Toni and Amaleed were knowledgeable and very flexible - looking forward to working with them in for future projects.

Siobhan Carey

I recently contracted Iso Cleanroom to design and build two modular ISO Class 6 cleanrooms so that our small orthobiologics company could implement in-house manufacture. They delivered on all of their commitments on cost, schedule and quality with no fuss. They showed up they day they said the would and finished up the day they said they would. They were extremely organised and meticulous, and helped us to address some unforeseen issues that cropped up during the installation.

Gareth Evans

We contracted ISO Cleanroom to design, build and validate a large cleanroom in our new facility. Toni really knows her business, and was very helpful through the design process, enabling us to make the most of the available space. When it came to installation, Anthony and his team did an exceptional job, keeping the install to schedule. We are very happy with the professional service we have had from ISO Cleanroom and would not hesitate in recommending others to use them for any cleanroom requirements.