Changes made by 80/128/EEC: Commission Decision of 28 December 1979 authorizing the United Kingdom to restrict the marketing of seed of certain varieties of agricultural plant species (Only the English text is authentic)
EU Decision 1980/128
No changes made by 80/128/EEC: Commission Decision of 28 December 1979 authorizing the United Kingdom to restrict the marketing of seed of certain varieties of agricultural plant species (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.