Dr P. J. Allisy-Roberts is a member of the UK Measurement Advisory Committee (MAC) for ionizing radiation and acoustics, and a scientific member of the UK Ionising Radiations Health & Safety Forum. She is also a member of an ICRU Report Committee, the BIPM representative on the IAEA SSDL Scientific Committee, and a member of the editorial board of J. Radiol. Prot..

Dr D. T. Burns is the BIPM representative at the ICRU and a member of the ICRU Committee on Fundamental Quantities and Units. He is the BIPM contact person at EUROMET for ionizing radiation and radioactivity.

Dr G. Ratel is the BIPM representative at the International Conference for Radionuclide Metrology (ICRM).

Dr C. Michotte is the BIPM contact person and rapporteur for Working Group 1 of the JCGM.

Dr P.J. Allisy-Roberts is Executive Secretary of the CCRI and its three Sections, which all met in May 2005, and of the CCAUV which met in September 2004.

She and Dr D.T. Burns are members of the CCRI(I) Working Groups on Key Comparisons (KCWG(I)), Air Kerma Correction Factors for Cavity Chambers, and Brachytherapy Standards (BSWG(I)).

Dr P.J. Allisy-Roberts, Dr C. Michotte and Dr G. Ratel are members of the CCRI(II) Working Groups on Key Comparisons (KCWG(II)) and Short-Lived Radionuclides.

Dr G. Ratel is a member of the CCRI(II) Working Groups on the Extension of the SIR to Beta Emitters (ESWG(II)) and Measurement Uncertainties (UCWG(II)).