I think we should not blame only UK government for such situation to be. Those who were studying for years, why didnt they make a little research while studying, where they are going to work later? During years of studying, students must have had practice. They should have noticed that something is wrong, not as they were promised with job sector. They could have taken a hard decision to drop studying and choose other profession. Instead they blindly continued and now demand jobs. Those doctors can always go abroad. I am sure they will be welcomed and there are many countries that need professional doctors.
It's much easy to say when you are not in their position. Imagine that you left home and promised your parents that you are going to UK to study medicine and your family as done everything to provide everything but after sometime the government made a change of decision after the promises and you want to change course, it's not going to be easy to do. Remember that some people can't make decisions on their own until their parents makes for them.
The solution is they should look elsewhere, medical doctor is a very hot jobs that is demanded not only in UK but in other part of the world. I remember seeing Canada was in need of doctors that time but I don't know how true it's. Been a graduate from UK will open plenty of doors for you when apply for jobs. Some people should also consider going back home, they are going to prioritize for jobs before their own people due to experience and other things.