22 Immunity (1) A director of the board of an ambulance service is not personally liable for anything done or omitted to be done in good faith— (a) in the exercise of a power or the discharge of a duty under this Act; or (b) in the reasonable belief that the act or omission was in the exercise of a power or the discharge of a duty under this Act. (2) Any liability resulting from an act or omission that would but for subsection (1) attach to a director of the board of an ambulance service attaches instead to the ambulance service. 22A Validity of acts or decisions An act or decision of the board of an ambulance service is not invalid by reason only of— (a) a defect or irregularity in or in connection with the appointment of a director of the board; or (b) a vacancy in the directorship of the board.