Changes made by 74/363/EEC: Commission Decision of 13 June 1974 exempting the United Kingdom from applying to certain species the Council Directive of 29 September 1970 on the marketing of vegetable seed (Only the English text is authentic)
EU Decision 1974/363
No changes made by 74/363/EEC: Commission Decision of 13 June 1974 exempting the United Kingdom from applying to certain species the Council Directive of 29 September 1970 on the marketing of vegetable seed (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.