It has the following requirements;
1. You should have MRCP part 1 passed (minimum requirement)
2. You must have got the required score in the IELTS or OET
a. For IELTS the required score is minimum 7.0 in all subcategories (reading, listening, writing and speaking) and an overall score of 7.5.
b. For OET the required score is grade B in all subcategories.
3. You must appear in an interview conducted by the Royal College of Physicians in your country and selected for the post OR you find a Job in the UK directly and inform Royal College of Physicians (London) that you have got the job by yourself and now you need RCP sponsorship for GMC registration.
You do not need to pass PLAB or MRCP (all parts) to get the GMC registration. Royal College of Physicians will send the sponsorship letter to GMC and you will get the permanent registration without passing PLAB or MRCP.
If you have any questions please write them in the comments section below.