43.— No action or other proceedings shall lie or be maintainable against—

(a) the Authority or a subsidiary of the Authority,

(b) a person performing functions delegated to it by the Authority,

(c) a public transport authority performing functions on behalf of the Authority, or

(d) a person providing services to the Authority,

for the recovery of damages in respect of any injury to persons, damage to property or other loss alleged to have been caused or contributed to by a failure of the Authority to perform or to comply with any of the functions conferred on it.