This section applies for the purposes of section 58.
"Local authority" means—
A Minister of the Crown may by order amend subsection (2) so as to add, vary or omit a reference to a body which exercises functions that have been conferred on a local authority within paragraph (a) to (l).
A reference to the carrying-out of official business by a person who is a member of a local authority is a reference to the doing of anything by the person—
"Member", in relation to the Greater London Authority, means—