(a)Category 1, comprising counterparties which, on the date of entry into force of this Regulation, are clearing members, within the meaning of Article 2(14) of Regulation (EU) No 648/2012, for at least one of the classes of OTC derivatives set out in Annex I of this Regulation or in Annex I of Commission Delegated Regulation (EU) 2015/2205note, of at least one of the CCPs authorised or recognised before that date to clear at least one of those classes;