Changes made by Council Directive 71/354/EEC of 18 October 1971 on the approximation of the laws of the Member States relating to units of measurement
EU Directive 1971/354
No changes made by Council Directive 71/354/EEC of 18 October 1971 on the approximation of the laws of the Member States relating to units of measurement are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.