The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009 ("CDG 2009"), SI 2009 No 1348 , came into force on 1 July 2009. They replace the 2007 regulations.
The Regulations implement ADR 2017 (with a number of exceptions). The main duties are now covered by a single regulation, namely Regulation 5.
Variations in GB which arise from derogations are now in a DfT Approved Document.
Information on the operation of the regulations may be found in the CDG manual.