The Secretary of State may by order make provision which changes the years in which the ordinary elections of councillors of any specified local authority are to be held but which does not change the scheme which prevails (whether by virtue of an order under section 86 or otherwise) for the ordinary elections of those councillors.
A local authority is specified if it is—
a local authority (or one of the local authorities) specified by name in the order, or
a local authority falling within any class or description of local authority specified in the order.
An order may include provision to secure the retirement of existing councillors at times different from those at which they would otherwise retire.