Changes made by 81/26/EEC: Commission Decision of 31 December 1980 on the grant of financial assistance within the framework of the supplementary measures established in favour of the United Kingdom (north-west of England) (Only the English text is authentic)
EU Decision 1981/26
No changes made by 81/26/EEC: Commission Decision of 31 December 1980 on the grant of financial assistance within the framework of the supplementary measures established in favour of the United Kingdom (north-west of England) (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.