Changes to Commission Decision of 9 November 2007 adopting a common specification of the national vehicle register provided for under Articles 14(4) and (5) of Directives 96/48/EC and 2001/16/EC (notified under document number C(2007) 5357) (2007/756/EC)
EU Decision 2007/756
Made by Commission Decision of 14 November 2012 concerning the technical specification for interoperability relating to the ‘operation and traffic management’ subsystem of the rail system in the European Union and amending Decision 2007/756/EC (notified under document C(2012) 8075) (2012/757/EU)
From legislation.gov.uk's record of changes, the official one: see it there.