(1)So long as the condition set out in subsection (3) of this section continues to be fulfilled, a British subject domiciled in the United Kingdom or India who, by virtue of a medical diploma granted to him in the United Kingdom, is, or is entitled to be, registered in the United Kingdom as a qualified medical practitioner shall not by or under any existing Indian law or any law of the Federal or any Provincial Legislature, be excluded from practicing medicine, surgery or midwifery in British India, or in any part thereof, or from being registered as qualified so to do, on any ground other than the ground that the diploma held by him does not furnish a sufficient guarantee of his possession of the requisite knowledge and skill for the practice of medicine, surgery and midwifery, and he shall not be so excluded on that ground unless a law of the Federation or of the Province, as the case may be, makes provision for securing-(a)that no proposal for excluding the holders of any particular diploma from practice or registration shall become operative until the expiration of twelve months after notice thereof has been given to the Governor-General and to the University or other body granting that diploma ; and(b)that such a proposal shall not become operative or, as the case may be, shall cease to operate, if the Privy Council on an application made to them under the next succeeding subsection determine that the diploma in question ought to be recognized as furnishing such a sufficient guarantee as aforesaid.