It might be most convenient for him to do his MBBS in India- especially in one of the well established schools set up by the British. He already has the A level qualifications.

Once he is a Dr he can work and earn money. One way is to go to the islands and teach Basic Sciences while he prepares for the Step exams. I have met many who have done it just like that.

It is better in my opinion to train where you are most comfortable- usually in your homeland.

My doctor is Indian. He grew up in NY, but went home to India to study Medicine before returning the US, where he did his residency. .