[1] Univ Liverpool, Radiat Protect Off, Liverpool L69 3BX, Merseyside, England
[2] GEN II Engn & Technol Training Ltd, Workington CA14 4JX, Cumbria, England
[3] Soc Radiol Protect, Torness EH42 1QS, Lothian, Scotland
[4] British Energy, Torness EH42 1QS, Lothian, Scotland
[5] SRP, Bouth CA19 1XH, Cumbria, England
[6] Publ Hlth England, Chilton OX11 0RQ, Oxon, England
[7] Westinghouse Ltd, Preston PR4 0XJ, Lancs, England
[8] Magnox Ltd, Berkeley GL13 9PA, England
[9] Kings Coll Hosp NHS Trust, Dept Med Engn & Phys, London SE5 9RS, England
[10] UCL Hosp NHS Fdn Trust, SRP, London NW1 2BU, England
[11] UCL Hosp NHS Fdn Trust, Dept Med Phys & Bioengn, London NW1 2BU, England
[12] Univ Cumbria, Fac Hlth & Sci, Carlisle LA1 3JD, Cumbria, England
[13] L2 Business Consulting Ltd, Newcastle Upon Tyne NE3 4HL, Tyne & Wear, England
[14] Univ Hosp Birmingham NHS Fdn Trust, Dept Radiol, Birmingham B15 2TH, W Midlands, England
[15] Nottingham Univ Hosp NHS Trust, Dept Radiat Phys, Nottingham NG5 1PB, England
[16] Magnox Ltd, Annan DG12 6RF, Dumfriesshire, Scotland
[17] Soc & Coll Radiographers, London SE1 2EW, England