Changes made by M4 Motorway (Junctions 1 - 4A) (Temporary Restriction and Prohibition of Traffic) 2012
S.I. 2012/904
No changes made by M4 Motorway (Junctions 1 - 4A) (Temporary Restriction and Prohibition of Traffic) 2012 are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.