Update 35, 16 August 2007
Argus Project gamma radiation levels
Association of University Radiation Protection Officers
Atomic Weapons Establishment
British Institute of Radiology
British Nuclear Energy Society
Committee Examining Radiation Risks from Internal Emitters
Committee on Medical Aspects of Radiation in the Environment
Committee on Radioactive Waste Management
Defence Science & Technology Laboratory
Department for Environment, Food & Rural Affairs - Radioactivity
Environmental Protection Directorate (Environment and Heritage Service)
Environmental Radioactivity and Radiometrics (Scottish Universities Environmental Research Centre )
Environmental Radioactivity Services (Centre for Environment, Fisheries and Aquaculture Science)
ENVIROS - Environmental Consultancy
Virtual Repository of Radwaste Information
Health & Safety Executive
Government Laboratory (Isle of Man Government)
Gray Laboratory Cancer Research Trust
Institute of Physics & Engineering in Medicine
IonActive Consulting - Radiation Protection Adviser (RPA)
Ionising Radiation Programme (National Physical Laboratory)
Ionising Radiation Regulations (IRR-99)
Low-Level Radiation Campaign
National Environment Research Council
National Radiological Protection Board (NRPB)
(now called Radiation Protection Division - part of Health Protection Agency)
National Registry for Radiation Workers Steering Group
NRPB Reports
Radiological Protection Bulletin
Northern Ireland Radiation Monitoring Group
Nuclear Regulatory Groups (Environment  Agency)
Quintessa Consultancy
Radiation Safety References & Web Sites
Radioactivity Monitoring (Somerset County Council)
Radioecology Group (Centre for Ecology and Hydrology Merlewood)
Radman Associates
RadSafe UK
Royal College of Radiologists
Scottish Environment Protection Agency
Siemens Environmental Systems
Society for Radiological Protection
Journal of Radiological Protection
Southern England Radiation Monitoring Group
Supporters of Nuclear Energy
United Kingdom Atomic Energy Authority
Many thanks to Victor Badulin for the additions to this page