British Standards Institute - www.bsi.org.uk

Department of Trade & Industry (DTI) - www.dti.gov.uk

Health & Safety Executive - www.hse.gov.uk

International Electrotechnical Commission - www.iec.ch

International Laser Display Association (ILDA) - www.laserist.org

Laser Institute of America (LIA) - www.laserinstitute.org

Health Protection Agency (formerly NRPB) - http://www.hpa.org.uk/radiation