Changes made by 2003/511/EC: Commission Decision of 14 July 2003 on the publication of reference numbers of generally recognised standards for electronic signature products in accordance with Directive 1999/93/EC of the European Parliament and of the Council (notified under document number C(2003) 2439)
EU Decision 2003/511
No changes made by 2003/511/EC: Commission Decision of 14 July 2003 on the publication of reference numbers of generally recognised standards for electronic signature products in accordance with Directive 1999/93/EC of the European Parliament and of the Council (notified under document number C(2003) 2439) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.