What ISO Cleanroom does

ISO Cleanroom is a UK-based, family-run engineering services company specialising in the design, build, validation, maintenance and rental of controlled-environment cleanrooms. It is operated by founder and director Toni Horsfield and senior project manager Anthony Horsfield, with its headquarters in Manchester and satellite offices in Oxford, Cambridge and Basingstoke, plus a dedicated rental facility in Macclesfield. The company was originally established as Clean Tent around 2003 and was relaunched under the ISO Cleanroom brand in November 2021 to position itself more clearly in regulated-industry work.

The firm's core service lines are cleanroom design, turnkey cleanroom build, modular permanent cleanroom system build, and validation across ISO 14644 classes 8 down to 5 and EU GMP Annex 1 / CTCB-I Grade A-D. It also manufactures and supplies benchtop ISO Hoods and HEPA-filtered enclosures, offers soft-wall and hardwall cleanroom rental on minimum three-month terms, and provides aftermarket upgrades and refurbishments of existing facilities. Underlying technical components include factory-preconstructed modular wall and ceiling systems, HEPA filtration, and a partnership with Elis for gowning and cleanroom laundry consumables.

ISO Cleanroom generates revenue through project-based professional services fees on bespoke design and build contracts, recurring maintenance and validation contracts on the installed base, managed-service rental income, and hardware sales of its ISO Hood and HEPA enclosure products. Its go-to-market is direct B2B into regulated and high-precision end markets — pharmaceuticals and life sciences, electronics and semiconductors, aerospace and advanced engineering, medical devices, R&D, and food and beverage — with named blue-chip references spanning Airbus, Rolls-Royce, Aston Martin, Formula One, Microsoft, Dolby, NASA, the British Antarctic Survey, Bosch, Continental, Balfour Beatty and several UK universities and museums. Pricing is not publicly listed and is negotiated per project.

Name

ISO Cleanroom

Legal name

ISO Cleanroom

Website

https://isocleanroom.co.uk

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

ISO Cleanroom is a UK-based, family-run cleanroom engineering firm that designs, builds, validates, maintains and rents cleanrooms for pharmaceuticals, electronics, aerospace and other regulated industries, serving clients including Airbus, Rolls-Royce and Microsoft.

Ownership category

akta.pro rank

Product category

Cleanroom Services and Contamination Control Solutions

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Laboratory Apparatus & Furniture (3821), Partitions, Shelvg, Lockers, & Office & Store Fixtures (2540)

akta.pro primary industry

Industrial & Cleanroom Fit-Out (Factories, Warehouses, Controlled Environments) (IMAFANAF)

akta.pro secondary industries

Laboratory & Cleanroom Cleaning (IMAIADAD), Cleanroom & Controlled Environment Cleaning (BPABABAH)

Keywords

• Cleanroom design services
• Cleanroom construction
• Contamination control solutions
• HEPA filtration systems
• Cleanroom validation testing

Headquarters

HQ city

Macclesfield

HQ country

United Kingdom

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure, Supply Chain

Revenue model

1. Cleanroom Design Services: Professional cleanroom design including full working drawings, material specification, and filtration requirements planning. Solution-based approach tailored to customer processes.
2. Cleanroom Build & Construction: Turnkey cleanroom construction including design, build, validation, and commissioning. Includes traditional structural builds and modular panelling systems.
3. Cleanroom Validation & Testing: Independent validation testing and certification services to ISO 14644 series and EU GMP Annex 1 standards. Includes particle counting, HEPA filter integrity testing, airflow measurement, and pressure cascade verification.
4. Cleanroom Maintenance Services: Planned preventative maintenance (PPM) and emergency repair services for HVAC, filtration, and structural integrity. Ongoing monitoring and compliance support.
5. Cleanroom Rental/Hire: Portable and fixed-location rental cleanrooms including soft wall Clean Tents (7.5m2 to 17.89m2) and hardwall ISO 6 units (12m2 with gowning room). Minimum 3-month hire periods.
6. Cleanroom Products: Sale of cleanroom products including ISO Hoods, HEPA enclosures, Fan Filter Units, HEPA filters and controls, and associated cleanroom equipment.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

ISO Cleanroom provides turnkey cleanroom design, build, validation, and maintenance services compliant with ISO 14644 and EU GMP standards. The company manufactures and installs modular cleanroom systems, HEPA-filtered enclosures, and benchtop ISO Hoods, and delivers independent validation testing, planned preventative maintenance, and cleanroom rental services across the UK.

Product overview

ISO Cleanroom is a cleanroom design, build, and validation company offering a comprehensive portfolio of contamination control solutions. The core offerings include Cleanroom Build (full turnkey solutions), Cleanroom System Build (modular permanent systems), Cleanroom Design, Cleanroom Validation, Cleanroom Maintenance, Cleanroom Rental, and Cleanroom Upgrades. Supporting products include the ISO Hood (benchtop enclosure) and HEPA Enclosure (portable or fixed filtered enclosures). The company provides services from initial design through to ongoing maintenance, covering the full lifecycle of controlled environments.

Differentiator

Problem solved

Functional benefit

Products and services

• Cleanroom Build Complete turnkey solution for the design, build and validation of ISO class cleanrooms, designed to suit process, validation, cleaning and monitoring requirements and meeting ISO 14644 or EU GMP standards. Targeted at enterprise manufacturers in pharmaceuticals, aerospace, electronics, and advanced engineering.
• Cleanroom System Build (ISO System) Permanent modular cleanroom system with factory-constructed frame for quick and clean on-site installation, providing gold standard clean environment with maximum flexibility and operational readiness within weeks.
• Cleanroom Validation Independent 'as built', 'at rest' and 'in operation' validation reports for controlled environments including cleanrooms, clean enclosures and laminar flow booths, covering ISO 8 to ISO 5 and GMP Grade A to D environments with a dedicated engineer tracking cleanroom data through the years.
• ISO Hood Cost-effective benchtop enclosure designed with either unidirectional (laminar flow) or non-unidirectional (turbulent) air flow for creating small ISO certified enclosures.
• HEPA Enclosure HEPA filtered enclosure with H13, H14 or U15 filters functioning as walk-in laminar flow booths, clean enclosures, or cleanroom tents, available in portable or fixed configurations and providing ISO 14644-1:2015 equivalent particle counts.
• Cleanroom Design Solution-based cleanroom design and specification including full design drawings, material specification, and filtration requirements, designing positive pressure cleanrooms, clean showers and portable cleanrooms to ISO 14644-1:2015 standards.
• Cleanroom Maintenance Professional maintenance services including scheduled preventative packages and emergency repairs for HVAC, filtration, and structural integrity to ensure ongoing ISO 14644 and GMP compliance, with planned monitoring visits covering pressure, leak testing, temperature, humidity, and airflow velocity.
• Cleanroom Rental Flexible cleanroom hire with portable and fixed-location options, including hardwall ISO 6 cleanrooms with H14 HEPA filtration and continual temperature monitoring, plus soft wall clean tents, with full validation and operational training provided.
• Cleanroom Upgrades and Refurbishments Expert gap analysis, HVAC modifications, and turnkey extensions ensuring regulatory compliance, including structural remediation, defect documentation, and facility modernisation services.

Quantifiable outcome

• Modular cleanroom installation operational within weeks
• +1 more outcomes

Named customers17 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Contamination Control Network (CCN)coreStrategic or Co-development PartnerISO Cleanroom is a committee member of the Contamination Control Network. Founder Toni Horsfield serves as Membership Secretary of the Managing Committee. CCN is a professional body for contamination control professionals.
• Cleanroom Testing and Certification Board International (CTCB-i)coreStrategic or Co-development PartnerISO Cleanroom's Director Toni Horsfield is a member of the CTCB-i examination team. CTCB-i is the international certification body for cleanroom testing professionals.
• ElisminorStrategic or Co-development PartnerPartnership with Elis for gowning hire and laundry services. Elis provides professional cleanroom garment cleaning and sterilisation including autoclaving, gamma irradiation, and ethylene oxide processing.
• T-SQUARED ValidairminorStrategic or Co-development PartnerSteve Ward from T-SQUARED Validair serves as chair for Day Two of the Cleanroom Technology Conference, with Toni Horsfield from ISO Cleanroom asking questions from the floor.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Clean Air Products: US cleanroom equipment manufacturer and integrator offering modular cleanrooms, laminar flow hoods, HEPA filtration and cleanroom testing — a close product-line and use-case peer across modular cleanroom hardware and certification services.
• AES Clean Technology: US-headquartered cleanroom design-build firm with modular cleanroom systems and validation services for life sciences, healthcare, and advanced manufacturing — comparable in turnkey design/build/validate positioning and modular technology.
• Terra Universal: Manufacturer and integrator of cleanrooms, laminar flow equipment, HEPA enclosures, and modular cleanroom components — overlaps directly with ISO Cleanroom's modular systems, ISO Hood, and HEPA enclosure product lines.
• Angstrom Technology: UK-based cleanroom design, build, and validation specialist covering ISO and GMP grades across pharma, aerospace, and research — directly comparable in geography, service mix, and target verticals to ISO Cleanroom.
• Cleanroom Construction Ltd: UK cleanroom design and build contractor operating across pharmaceutical, medical device, and electronics sectors with modular and traditional construction capabilities — a close head-to-head competitor to ISO Cleanroom's core offering.
• Critical Environment Solutions (CES): UK provider of cleanroom enclosures, soft-wall clean tents, and hardwall modular cleanrooms for hire and sale — directly competitive with ISO Cleanroom's portable/fixed cleanroom rental and modular build offerings.
• Clean Rooms International (CRi): US-based modular cleanroom manufacturer and integrator offering portable and permanent cleanrooms, laminar flow equipment, and turnkey installations — directly comparable in modular cleanroom product offering and customer use cases.

Broad incumbents

• Labconco: Established manufacturer of laboratory equipment including fume hoods, biosafety cabinets, and cleanroom-adjacent enclosures — comparable in contamination-control product category but broader portfolio serving general lab customers rather than specialising in cleanroom build.

Emerging players

• Airkey: Manufacturer of modular cleanrooms, hardwall panels, and cleanroom doors serving global pharma and electronics customers — comparable modular cleanroom technology but with an emerging global footprint competing on price-led modular builds.

Regional players

• Conn-Ferguson (part of Elomatic): UK cleanroom and process engineering contractor serving pharma and life sciences with design, build, and validation — comparable in UK geography and regulated-vertical focus, though typically handling larger-scale projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/iso-cleanroom

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ISO Cleanroom