 The service says it has advised on over 16,000 disputes to date and mediates approximately 600 major cases a year.On November 9, 2011 it was announced that, the previous day, CEDR had acquired IDRS Ltd, the dispute resolution service of the Chartered Institute of Arbitrators.In 2007 CEDR started the Commission on International Arbitration, chaired by Lord Woolf and Professor Kaufmann-Kohler, to investigate settlement in international arbitration and to make recommendations on how arbitral institutions and tribunals can give parties greater assistance.