Changes made by 2003/570/EC: Commission Decision of 30 April 2003 relating to a proceeding under Article 81 of the EC Treaty and Article 53 of the EEA Agreement – Case COMP/ 38.370 — O2 UK Limited / T-Mobile UK Limited ("UK Network Sharing Agreement") (notified under document number C(2003) 1384) (Text with EEA relevance.)
EU Decision 2003/570
No changes made by 2003/570/EC: Commission Decision of 30 April 2003 relating to a proceeding under Article 81 of the EC Treaty and Article 53 of the EEA Agreement – Case COMP/ 38.370 — O2 UK Limited / T-Mobile UK Limited ("UK Network Sharing Agreement") (notified under document number C(2003) 1384) (Text with EEA relevance.) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.