International Work

1994-2002 ICRP - Corresponding member of Committee 2's Task Group on Dose Calculations (DOCAL).

1991-93 Member of CEC/DOE Working Group to Develop Recommendations on Risks from Radon Exposure.

1991 Chairman of Technical Review Committee, Atomic Energy of Canada Ltd., Chalk River Nuclear Laboratories, Radiation Biology and Dosimetry Research Programs.
1990-92 ICRP - Member of Committee 4's Task Group on Measures for Protection Against Radon.

1989 Member of Technical Review Committee, Atomic Energy of Canada Ltd., Chalk River Nuclear Laboratories, Radiation Biology and Dosimetry Research Programs.

1986-87 UK Representative on CEC Working Party to Review Exposure to Natural Radiation in Dwellings of the European Communities.

1985-92 Atomic Energy Control Board, Canada. Member of Review Panel for Experimental Study of the Effects of Uranium Ore Dust.

1984-93 ICRP - International Commission on Radiological Protection. Member of the Task Group on Human Respiratory Tract Models for Radiological Protection.

1984-86 OECD/NEA - CEC Organizing Committee for the International Inter-calibration and Intercomparison Programme on Radon Metrology. Representative of UK European Reference Laboratory.

1982-84 OECD/NEA Expert Group of Radon Dosimetry and Monitoring - Phase II. Member and co-author of final report.

1980-82 OECD/NEA Expert Group on Radon Dosimetry and Monitoring - Phase I. Consultant to the group on dosimetric modelling and principal author and editor of final report.