Endell Thomas v Attorney General of Trinidad and Tobago

The Constitution exclusively vests in the Police Service Commission the power to appoint, transfer, promote and remove (discipline) police officers, in order to insulate the police from political control; subordinate regulations that purport to confer those disciplinary powers on, or delegate them to, others (e.g. the Commissioner of Police) are ultra vires the Constitution and void, and a police officer can only be removed for reasonable cause of which the Commission is the sole judge.