A constable is not liable for relevant damages in respect of anything done or omitted to be done by him in the performance or purported performance of his functions under this Part.
A chief officer of police is not liable for relevant damages in respect of anything done or omitted to be done by a constable under his direction or control in the performance or purported performance of the constable’s functions under this Part.
Subsections (1) and (2) do not apply—
This section does not affect any other exemption from liability for damages (whether at common law or otherwise).
Relevant damages are damages in proceedings for judicial review or for the tort of negligence or misfeasance in public duty.