Changes to Council Directive of 26 May 1986 on rear-mounted roll-over protection structures of narrow-track wheeled agricultural and forestry tractors (86/298/EEC)
EU Directive 1986/298
Made by Commission Directive 2005/67/EC of 18 October 2005 amending, for the purposes of their adaptation, Annexes I and II to Council Directive 86/298/EEC, Annexes I and II to Council Directive 87/402/EEC and Annexes I, II and III to Directive 2003/37/EC of the European Parliament and of the Council, relating to the type-approval of agricultural or forestry tractors
From legislation.gov.uk's record of changes, the official one: see it there.