The Secretary of State must, for the purposes of these Regulations, divide the territory of England into zones and agglomerations.

A zone will be classified as an agglomeration if it is a conurbation with a population in excess of 250,000 inhabitants.

In these Regulations references to a zone include a zone which has been classified as an agglomeration.

Zones are identified on a map published by the Secretary of State in January 2010. M1