Subject as follows, a relevant body may submit an expression of interest to a relevant authority at any time.

A relevant authority may specify periods during which expressions of interest, or expressions of interest in respect of a particular relevant service, may be submitted to the authority.

The relevant authority must publish details of each specification under subsection (2) in such manner as it thinks fit (which must include publication on the authority's website).

The relevant authority may refuse to consider an expression of interest submitted outside a period specified under subsection (2).