At Approved Air, our ambition is simple — to lead the transformation of air quality and compliance across the UK, setting new benchmarks in innovation, sustainability, and performance.
We are committed to delivering unmatched technical excellence, building trust through every partnership, and shaping a Net Zero future through clean, compliant, and sustainable solutions.
Our work goes beyond compliance; it’s about creating environments that protect people, enhance performance, and contribute to a cleaner, safer world.
Our office team

David Downing
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As Managing Director of Approved Air, David Downing leads with a clear and ambitious vision — to make the company the preferred national partner for air quality, compliance, and sustainability.
A Registered Environmental Practitioner (REnvP) and experienced QHSE professional, David combines technical insight with strong leadership and a forward-thinking approach to business growth.
His focus is on empowering people, strengthening operations, and embedding Net Zero principles across every project.

Peter Garrett
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Over the past 12 years, Peter Garrett has worked his way up to become our Operations Director. Fully qualified in all aspects of our services, he plays a key role in ensuring smooth, high-quality operations across the company.

Danielle Hembrough
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With 11 years at the company, Danielle Hembrough brings a wealth of experience to her role as Operations Manager. She oversees all aspects of the office, ensuring everything runs efficiently and supports the wider team seamlessly.

Adam Palfrey
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Adam Palfrey has been with the company for 7 years and brings a deep understanding of both engineering and office operations. As Technical Compliance Manager, he ensures our work meets the highest standards across all areas.

Abi Leahy
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Abi has recently joined Approved Air as our Management Accountant. She brings a strong financial background and is focused on supporting the business with clear, accurate reporting and financial insight.

Janice Walker
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Janice Walker manages the engineers’ workload with expertise and efficiency. Her experience ensures smooth scheduling and effective coordination across the team.

Adrian Bell
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Adrian Bell is an experienced clean-air and filtration consultant with over 16 years working across healthcare, laboratories and critical-environment sites. He specialises in ISO 16890 and Eurovent standards, helping clients improve air quality, energy performance and compliance through clear, practical solutions.
Adrian is known for his technical knowledge, honest advice and ability to turn complex requirements into simple, effective strategies. He works closely with clients to deliver safer, cleaner and more efficient environments.

Callum Watts
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Callum Watts has recently joined us as a Business Administration Apprentice in partnership with Weston College. He’s eager to learn and contribute as he develops his skills within the company.

Phoebe Wills
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Phoebe Wills has recently joined us as a Business Administration Apprentice in partnership with Weston College. She’s enthusiastic about gaining experience and growing her skills with the team.

Joe Trapani
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Joe is one of our Business Administration Apprentices through Weston College. He is developing his skills across multiple areas and brings enthusiasm and attention to detail to the team.
Our engineering team

Sam Davis
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With 7 years at the company, Sam Davis leads our engineering team with a focus on growth and excellence. As Engineering Manager, he plays a key role in developing a strong, skilled team that consistently delivers high-quality work.

Ashley McGivern
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Ashley leads our Northern team with many years of experience, bringing strong leadership and expertise to drive success in the region.

Ashley Allward
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Ashley Allward is one of our Southern Team Leader, bringing expertise and leadership to ensure top-quality ventilation solutions.

Joseph Procter
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Joseph Procter is our Midlands Team Leader and one of our highest qualified engineers, known for his strong work ethic and dedication to excellence.

John Matthews
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John Matthews is a senior M&E engineer with over 25 years of industry experience, working across HVAC, ventilation, refrigeration, and electrical systems. John brings a depth of knowledge, technical maturity, and real-world problem-solving ability that only decades in the field can deliver.
Fully F-Gas certified and trained in electrical installation, diagnostics, and compliance, John is trusted for his precision, reliability, and high-standard workmanship. His expertise spans system maintenance, fault-finding, plant optimisation, commissioning, and safety-critical testing across commercial, industrial, and healthcare environments.
Known for his calm approach, technical accuracy, and commitment to doing the job right the first time, John plays a crucial role in ensuring building services operate safely, efficiently, and fully in line with UK regulations.

Chris Hawkins
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Chris Hawkins is one of our ventilation engineers, always keen to expand his knowledge and improve his skills.

Ali Haider
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Ali Haider is one of our ventilation engineers and holds a master’s degree in engineering, bringing advanced knowledge and skills to his role.

Callum Heptinstall
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Callum is an emerging Ventilation Engineer, focused on building his expertise and growing his skills.

Claudiu Colan
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Claudiu Colan is a new member of our ventilation team, bringing valuable experience from his background in DOP testing. He is expanding his expertise and contributing to the delivery of high-quality ventilation services.

Anayeth Miah
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Anayeth Miah is one of our newest Ventilation Engineers, bringing a unique perspective to the role with a degree in Biology. He is quickly developing his skills and applying his scientific background to support our projects.

2x Commissioning Engineers

2x Ventilation Engineers
Our Impacts
Corporate Social Responsibility
Approved Air is a Business for Good in partnership with B1G1, through which we support worthy causes aligned with the UN Sustainable Development Goals and The 2023 Agenda for Sustainable Development.
We are passionate about creating real, meaningful, and worldwide impact. So by working with Approved Air, you are making a difference and helping us collectively have an impact for worthy causes all over the world.
We became a Business for Good in 2023, here’s the breakdown of our impacts so far…
Got a project you’d like to discuss?
Get in touch today and one of our knowledgable team members will assist you with your requirements.



