Prof. A. J. Wallard is a member of the Scientific Council of the (INRiM), Turin; a member of IUPAC's Interdivisional Committee on Terminology, Nomenclature and Symbols (ICTNS); a member of IUPAP-C.2 Commission on Symbols, Units, Nomenclature, Atomic Masses and Fundamental Constants (SUNAMCO). He is a Visiting Professor in the Institute of Mathematics and Physical Sciences of the University of Wales at Aberystwyth; a member of the Board of the National Conference of Standards Laboratories International (NCSLI); a member of the Scientific Academy of Turin; a member of UK's Pathfinder Programme Working Group and the National Measurement System Board of the Department for Universities, Innovation and Skills; a member of the Advisory Board of INMS-NRC, Canada, and Chairman of the JCRB and the JCGM.

C. Thomas is a member of the “Cabinet scientifique des Secrétaires perpétuels de l'Académie des sciences de Paris”. In this context, she is a member and acts as the Scientific Secretary of the permanent committee of the Académie des Sciences “Science et métrologie”. C. Thomas is a member of the Organizing Committee and of the Scientific Committee of the International Congress of Metrology 2009, to be held in Paris from 22 to 25 June 2009 (“Metrology'2009”).

C. Thomas is the Executive Secretary of the CCU. She is a member of the CCEM working groups on proposed modifications of the SI (CCEM WGSI) and on coordination of the regional metrology organizations (CCEM RMO WG), a member of the CCM Working Group on the SI Kilogram (CCM WGSI kg), and a non-voting member of the CCT Working Group on Key Comparisons (WG 7).

M. Stock is Executive Secretary of the CCEM, Executive Secretary of the CCPR and an ex-officio member of all CCPR working groups.

R. Goebel organizes the review of comparison reports and protocols within the CCPR Key Comparison Working Group.

R.S. Davis is Executive Secretary of both the Consultative Committee for Mass and Related Quantities (CCM) and the Consultative Committee for Thermometry (CCT).