Changes made by 84/17/EEC: Commission Decision of 22 December 1983 concerning the implementation by the United Kingdom of certain measures to adjust capacity in the fisheries sector pursuant to Council Directive 83/515/EEC (Only the English text is authentic)
EU Decision 1984/17
No changes made by 84/17/EEC: Commission Decision of 22 December 1983 concerning the implementation by the United Kingdom of certain measures to adjust capacity in the fisheries sector pursuant to Council Directive 83/515/EEC (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.