Article 20U.K.
The Member States shall bring into force, the laws, regulations and administrative provisions necessary to comply with this Directive no later than 31 December 1992. They shall forthwith inform the Commission thereof.
When Member States adopt these measures, they shall contain a reference to this Directive or shall be accompanied by such reference at the time of their official publication. The methods of making such a reference shall be laid down by the Member States.