Time of members of the medical service entirely at disposal of Government

(1) Except as mentioned in subsection (2) of this section, the time of every member of the Government Medical Service shall be deemed to be wholly at the disposal of the (2) Nothing contained in this section shall in any way diminish the existing rights and privileges of such medical officers as are now entitled to the right of private practice by the terms of their appointment in the Overseas Service, and any other medical officer may, with the sanction of the Minister, engage in the practice of his profession, on such terms and for such period as shall from time to time appear to the Minister to be fit.