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Our expert panel have answered a range of questions on work-related cancers and managing carcinogenic exposures.

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Duncan Spencer

Head of Advice and Practice


Duncan is a Chartered Fellow of IOSH and has been a health and safety practitioner for nearly 30 years. His safety career has included working in many different sectors from retail and distribution to farming and police forces. His knowledge of asbestos management is derived from experience of writing policy, developing procedures and investigating incidents, particularly during his tenure as Safety Manager Strategic for the John Lewis Partnership.

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Professor John Cherrie

Research Director
Institute of Occupational Medicine

John’s research interests include human exposure assessment, environmental and occupational epidemiology, natural and synthetic fibres – including asbestos, dermal exposure to chemicals and dermatitis, and particulate air pollution. He also prepares medico-legal reports in relation to dust and chemical exposures, particularly to do with occupational cancer risks.

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Dr Lesley Rushton OBE

Emeritus Reader in Occupational Epidemiology
Imperial College London

Lesley is a medical statistician and epidemiologist with a degree in Mathematics from Oxford University and an MSc in Statistics from Sussex University. She holds a PhD in methodological aspects of epidemiological studies gained at the Institute of Cancer Research, London, and has been awarded an OBE for service to occupational health. She is currently involved in multidisciplinary research programmes into occupational and environmental causes of ill health. She is the lead author of the groundbreaking report ‘The burden of occupational cancer in Great Britain’.

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Liz Darlison

Director of Services
Mesothelioma UK

Liz is responsible for developing Mesothelioma UK’s vision and strategic direction and has overall responsibility for the financial security and operational activities. Liz is the clinical lead for the growing number of Mesothelioma Nurse Specialists supported by the charity and is also the external spokesperson for Mesothelioma UK. Liz trained in Leicester and has worked her way up from nursing sister, ward manager to lung cancer nurse specialist and now Mesothelioma Consultant Nurse. Throughout her career her practice has been underpinned with academic qualifications and professional training.

Stephen Sadley

Chief Executive
Asbestos Removal Contractors Association (ARCA)

Stephen Sadley is the Chief Executive of the Asbestos Removal Contractors Association (ARCA). He joined ARCA in 2000 as the Association’s Business Development Manager becoming the General Manager, and then CEO in 2008. Stephen has spent all his career in the asbestos management industry, which has included roles as an asbestos analyst /surveyor in the UK, asbestos project manager for the Mass Transit Railway Corporation (MTRC) in Hong Kong and asbestos manager for a UK demolition company. He has a BA in Business Management and a BSc in Environmental Science, and is a Fellow of both the Institute of Leadership and Management (ILM) and the Chartered Management Institute (CMI). Stephen has built strong relationships across the industry, and as CEO of ARCA is a member of The Asbestos Leadership Group (ALG), which is a forum of key stakeholders, including the HSE, that work together to promote best practices in the control of and work with asbestos. He played a significant part in setting up the Asbestos Removal Management Institute (ARMI).

Colette Willoughby

Asbestos Qualifications Technical Advisor
British Occupational Hygiene Society

Colette is a highly qualified health and safety professional, and has a MA in Health and Safety Law and Environmental Law; and holds a Diploma in Occupational Safety and Health. Additionally, Colette is BOHS’ Asbestos Qualifications Technical Advisor, and holds the BOHS Certificate of Operational Competence in Asbestos. She sits on the board of the new Faculty of Asbestos Assessment and Management, the association of asbestos professionals. She also sits on the BOHS board of examiners for the Certificate of Competence in Asbestos, and as such is responsible for advising on the technical content of all BOHS asbestos-related exams. Finally, she is a technical assessor for UKAS, for both Testing Organisations and Inspection Bodies. Colette has over 34 years’ experience in all aspects of asbestos control, management, training and legal compliance, in addition to providing expert witness advice for both civil litigation and criminal prosecutions.