Who's Who

Post holders

Claire Holman
Claire Holman FIAQM


Claire is an air quality specialist with Brook Cottage Consultants with over 30 years’ experience. She has advised national governments in Europe, Asia and Africa, as well as the European Commission on a range of strategic air quality and climate change issues. Claire has contributed to the development of IAQM and EPUK professional guidance, been a member of a Government air quality review group, and advised the Department for Transport on their cleaner vehicles and fuels research programme. She is an experienced expert witness for planning and CPO inquiries and litigation.

Roger Barrowcliffe MIAQM

Vice Chair

Roger is an independent consultant, operating as Clear Air Thinking. After graduating in Physics & Meteorology, he worked at the Met Office, thee Central Electricity Generating Board and ERM for 21 years  (many as Technical Director and then Partner), contributing to UK and international EIAs, and policy studies for the UK government and the European Commission. Roger worked with RWDI for 2 years, where he made use of wind tunnels to simulate near-field dispersion around buildings. He is a Chartered Meteorologist and a Chartered Scientist.

Michael Bull FIAQM

Vice Chair

Michael is a Director of Arup leading their environmental consultancy business. He has over 30 years of experience as an air quality consultant started at Imperial College, before joining British Gas researching the environmental impacts of substitute natural gas production. Here he was introduced to dispersion modelling through their in-house version of the R91 algorithms. Michael began coding air quality models in Fortran and Pascal before moving into consultancy in 1988. He joined Ashdown Environmental, where he carried out numerous air quality studies mainly for road schemes and power proposals becoming very familiar with all the USEPA dispersion models. He joined Arup in 1996 and for the last 20 years has been their technical lead on air quality matters.

Fiona Prismall
Fiona Prismall MIAQM


Fiona is a Technical Director at RPS. She has extensive experience in assessing air quality for waste management facilities, major transport infrastructure schemes, minerals operations, industrial installations and mixed-use/residential developments. She undertakes assessment work using atmospheric dispersion models (ADMS, AERMOD), the Highways Agency Design Manual for Roads and Bridges (DMRB) model, WebTAG and emissions inventory packages.  Her experience also includes drafting Dust Action Plans, Odour Management Plans, designing monitoring campaigns, devising air quality action plans and providing expert witness services.  She has a BSc in Pure Mathematics and an MSc (Distinction) in Applied Meteorology. She is a Chartered Environmentalist.

David Muir
David Muir FIAQM


David Muir worked for Bristol City Council, mainly on air quality, from 1976 to 2009 and after taking early retirement worked until recently as an independent consultant and researcher. Since a second “retirement” he is still pursuing his air quality research interests. He is both a Chartered Environmentalist and Chartered Scientist and has regularly interviewed prospective CEnvs. David gained his PhD in 2003 from the University of the West of England; the subject was developing a means of identifying the sources of PM 10  during pollution episodes and David has since given papers at international conferences and has had a number of papers published. He was a founder member of the Institute of Air Quality Management and served on the IES Council from 2006-16.

Other committee members

Liz Bates
Elizabeth Bates MIAQM

Liz is a local government officer and Chartered Scientist, with a background in chemistry, environmental management and acoustics. She has been the lead air quality officer at City of York Council for 18 years. During this time she has overseen the development of an extensive air pollution monitoring network, developed York’s overarching Low Emission Strategy and has recently completed York’s third low emission based air quality action plan. Recent projects at York include the development of a low emission bus based Clean Air Zone, development of an anti-idling strategy and adoption of low emission planning policies. Liz also works part-time at City of Bradford MDC delivering LAQM review and assessment and low emission planning functions. She is an active member of the Low Emission Partnership (LEP) and the Yorkshire and Lincolnshire Pollution Advisory Group (YALPAG).

Beth Conlan
Beth Conlan MIAQM

Beth is a Technical Director and leads the Air Quality Modelling and Assessment team at Ricardo. Beth has over 25 years’ experience, including working for the European Commission for over 10 years supporting the evaluation, implementation and further development of air quality policies. Beth has extensive experience of legislation and policy within the UK, working closely with Defra, many local authorities and the private sector. She has expertise in developing and reviewing national and local air quality plans, working with stakeholders from transport and health in the assessment and implementation of mitigation measures. Since 1998 Beth has taught air quality management to local authorities as part of the EMAQ+ training programme, which is endorsed by the IAQM. Beth is a member of UK Government Expert Committee on the Medical Effects of Air Pollution.

Adam Donnan

Adam is the CEO of the Institution of Environmental Sciences (IES) and sits on the IAQM committee as an ex officio member to report on IES activities and ensure that the strategies of the organisations are complementary.  Adam’s role at the IES includes creating strategyand directing and controlling key resources. He has sat on a number of nonprofit and for-profit boards in the environmental sector. Currently, he is a trustee of the Science Council.  He holds an MBA and a BA in History and is a Fellow of the Chartered Management Institute and a Chartered Environmentalist.

Bernard Fisher
Bernard Fisher MIAQM

Bernard Fisher is an environmental modeller with nearly 40 years research experience of air quality modelling. His career started in the power industry where he worked on acid rain. Between 1994 and 2000 he was Professor of Environmental Modelling at the University of Greenwich working on air quality management. Since joining the Environment Agency in 2000 he has been involved with the evaluation and use of environmental models with emphasis on air quality. He is a visiting professor at the University of Hertfordshire and a former Chair of the IAQM.

Sofia Girnary
Sofia Girnary MIAQM

Sofia Girnary is Technical Advisor at the Environment Agency within the Air Quality Modelling and Assessment Unit. She has over 15 years’ AQ experience including technical work, policy work and project management. Her experience includes air quality dispersion modelling and assessment, constructing emissions scenarios and carrying out modelling to assist local authority clients.  Sofia also has experience in developing and delivering air quality training courses and qualified as an accredited CIEH trainer in 2005.

Graham Harker
Graham Harker MIAQM

Graham has over 15 years’ experience in air quality and leads the air quality discipline for Peter Brett Associates. He has undertaken and led many air quality projects for industrial, commercial and public sector clients involving air quality, dust, and odour impacts. He has acted as expert witness for a number of planning inquiries covering both air quality and odour impacts for land development projects within the UK.  He has a BSc in Mechanical Engineering from Imperial College London.

Marilena Karyampa

Marilena is a Chartered Environmentalist who works as a Senior Air Quality Consultant at Arup. She leads on assessments of air quality and odour impacts for projects, including aviation, major transport infrastructure schemes, mixed-use developments and industrial installations. She is a health practitioner who undertakes health impacts assessments. Marilena has Applied Meteorology and Environmental Technology MScs. She has a robust knowledge of atmospheric dispersion models (ADMS, AEDT), the DMRB model, WebTAG and emissions inventory packages. She manages and participates in stakeholder engagement, including consultation with statutory authorities, community consultation and steering groups.

Sarah Legge

Sarah is the Managing Director of SLH Environmental Ltd, an independent consultancy established in 2010. She specialises in air quality and low emission transport work (covering both air pollution and climate change), and policy development and implementation. She has extensive experience in working on these topics with all levels of government, the private sector and NGOs. She has previously worked at the Greater London Authority, where she was the lead on air quality and low carbon transport work. Sarah is also the Chair of Environmental Protection UK Air Quality Committee.  She holds an MSc in Environmental Technology from Imperial College London and a BA in Natural Sciences from Cambridge University.

Daniel Marsh

Daniel is a Senior Air Quality Analyst working in the aerosol science team at the Environmental Research Group, King’s College London, specialising in the control of dust and emissions from construction and demolition. He project manages the London Low Emission Construction Partnership, funded through the Mayor’s Air Quality Fund, which aims to raise awareness of the air quality impacts from the construction industry, promote ‘best in class’ mitigation and emission reduction practices, and measure real-world emissions from construction machinery to enhance understanding and test the efficacy of reduction efforts. Daniel was the recipient of the 2016 Ian McCrae award for ‘Outstanding Work in Air Quality’

Anil Namdeo
Anil Namdeo MIAQM

Anil is a Chartered Environmentalist, a Chartered Scientist and a Senior Lecturer in Transport and Sustainability at Newcastle University. He is a Fellow of the Royal Meteorological Society and a member of several professional bodies including Institution of Environmental Sciences and Institute for Air Quality Management. He leads the MSc in Transport and the Environment at the School of Civil Engineering and Geosciences, Newcastle University that includes a dedicated module on air pollution (accredited by IAQM) and two CPD courses on air quality and health. He has been actively engaged in international research and has close links with academics and researchers in India, China and USA.

Jon Pullen
Jon Pullen MIAQM

Jon is an Operational Director at RPS, leading the company`s specialist environmental office at Brighton. Starting his career in the former Central Electricity Generating Board before moving into consultancy in 1991, Jon has more than 25 years post-graduate experience in air quality, covering infrastructure developments, waste management facilities, minerals operations, industrial installations, energy, wastewater treatment works, residential and mixed-use developments. Jon is the County Air Quality Consultant to Surrey County Council. He has contributed to and co-authored numerous air quality guidance publications for the Environment Agency, Defra and the IAQM. He is a Chartered Chemist and a Chartered Scientist.

Tom Reade
Tom Reade MIAQM

Tom is a Principal Air Quality Consultant at Hilson Moran, with 6-years professional experience. He has developed skills in sectors including property development, commercial and industrial premises, surface mine schemes, quarries, waste operations, and transport infrastructure. Tom is experienced in EIA and standalone AQ impact assessments for the protection of human health and ecosystems. He has undertaken numerous ambient air quality monitoring surveys using real-time and passive monitoring equipment. He is competent in air quality modelling packages (ADMS, DMRB and WEBTAG) and geographical information systems (MapInfo, ArcGIS and QGIS). He has an Air Pollution Management & Control MSc.