Changes made by Council Directive 93/94/EEC of 29 October 1993 relating to the space for mounting the rear registration plate of two or three-wheel vehicles
EU Directive 1993/94
No changes made by Council Directive 93/94/EEC of 29 October 1993 relating to the space for mounting the rear registration plate of two or three-wheel vehicles are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.