Changes to Directive 98/78/EC of the European Parliament and of the Council of 27 October 1998 on the supplementary supervision of insurance and reinsurance undertakings in an insurance or reinsurance group
EU Directive 1998/78
Made by Directive 2011/89/EU of the European Parliament and of the Council of 16 November 2011 amending Directives 98/78/EC, 2002/87/EC, 2006/48/EC and 2009/138/EC as regards the supplementary supervision of financial entities in a financial conglomerate
From legislation.gov.uk's record of changes, the official one: see it there.