When the London Group took on the challenge of SEEA revision, additional coordination was required, which resulted in the involvement of the international agencies that would eventually publish the handbook (Eurostat, IMF, OECD, World Bank and the United Nations Statistics Division) in a formal coordinating committee for the London Group established in 1999.
C'est ainsi qu'a été constitué en 1999 un Comité de coordination du Groupe, composé des entités internationales (EUROSTAT, FMI, OCDE, Banque mondiale et Division de statistique de l'ONU) qui devaient par la suite publier le manuel.