Based and active in the North, we are on your doorstep and ready to help.

Epsilon is owned and run by Niall Evans. Niall is a highly experienced occupational hygienist, and a former HM Principal Specialist Inspector with the Health and Safety Executive. He specialises in the fields of asbestos management, Legionella control and COSHH, including microbiological hazards. Niall spent twenty two years with the HSE, leading a team of specialist occupational hygiene inspectors. In addition, Niall has a background as a microbiologist with the NHS, managing containment level 2 and 3 laboratories.

His experience includes:
Asbestos: Asbestos management plans, audits and site inspections.  Expert witness in many prosecutions for cases of exposure to asbestos.  Training managers in asbestos managemen.

Legionella: Investigation of failure to control the risks from Legionella.  Expert evidence for a number of prosecutions.  Technical advice to several outbeak control committees.  Co-author of HSE’s Legionella strategy.  Training managers in duties under L8 and HSG 274.

COSHH: Advice on assessment and control of a wide range of risks from hazardous substances and microbes across all industries.  Investigation of exposures leading to ill health.

Niall is ideally placed to support business managers with advice on compliance and practical support.

To discuss your requirements, with no obligation, please contact us.

Associate – Richard Barker BSc(Hons) LFOH

Richard is a qualified occupational hygienist and asbestos surveyor with thirty years’ experience in industry and as a consultant.  He holds the Certificate of Operational Competence in Occupational Hygiene and is a Licentiate of the Faculty of Occupational Hygiene.

For asbestos surveying, Richard holds the British Occupational Hygiene Society (BOHS) qualifications P402 in Asbestos Surveying and S301 in Asbestos and other fibres.  As a well-respected professional, Richard is a practical assessor for BOHS in their examinations for their qualifications in asbestos: P401, P402, P403, P404, P405.

His expertise also enables him to carry out a range of workplace measurements, including air quality and noise.

Niall Evans TD DipOH CMFOH Managing Director

Niall Evans
Managing Director


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Richard Barker asbestos surveyor

Richard Barker LFOH
Asbestos surveyor and occupational hygienist