A constable is not liable for relevant damages in respect of anything done or omitted to be done by the constable in the performance or purported performance of functions under this Part.
A chief officer of police who has direction or control of a constable is not liable for relevant damages in respect of anything done or omitted to be done by the constable in the performance or purported performance of functions under this Part.
Neither a local authority nor an employee of a local authority is liable for relevant damages in respect of anything done or omitted to be done by or on behalf of the authority in the performance or purported performance of functions under this Part.
Subsections (1) to (3) do not apply—
This section does not affect any other exemption from liability for damages (whether at common law or otherwise).
In this section “relevant damages” means damages in proceedings for judicial review or for the tort of negligence or misfeasance in public office.