Changes made by M25 Motorway (Junctions 29 - 30) (Temporary Prohibition of Traffic) 2011
S.I. 2011/2654
No changes made by M25 Motorway (Junctions 29 - 30) (Temporary Prohibition of Traffic) 2011 are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.