Changes to 80/1284/EEC: Commission Decision of 19 December 1980 amending Commission Decision 78/638/EEC authorizing the United Kingdom of Great Britain and Northern Ireland to grant exemptions for national road transport operations from the Community regulations on social matters relating to road transport (Only the English text is authentic)
EU Decision 1980/1284
No changes to 80/1284/EEC: Commission Decision of 19 December 1980 amending Commission Decision 78/638/EEC authorizing the United Kingdom of Great Britain and Northern Ireland to grant exemptions for national road transport operations from the Community regulations on social matters relating to road transport (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.