'Also I would like to add, most students especially ethic students don't like taking a gap year and reapplying to medicine school in the UK because 1. they feel that they'll get left behind when comparing themselves to their peers 2. pressure from parents to get into uni ASAP so they can get married when they are young and 3. don't want to face the disappointment of getting rejected for the second time !'
I think you may have hit the nail on the head there. This makes sense to me, as social status and becoming a Doctor is a much bigger deal to ethnic minorities for the reasons you have outlined above. As a result, ethnic minority students are much more likely to take drastic measures such as moving to Eastern Europe for 6 years to study medicine if they were rejected by UK med schools, whereas a typical white student would often be less bothered about a gap year, and perhaps more likely to accept not becoming a doctor and doing something else. Pressure from family to become a doctor and a fiercely competitive nature is less common in the white community based upon my observations. White parents are often very liberal, allowing their child to pursue whatever makes them happy, while Asian parents are much more likely to push their kids into medicine / engineering / law. I have also noticed Asian parents have much more sway and authority in their child's life and decisions, even when they are 18 or above. I have heard many Asians describe their parents 'forcing' them to study a certain degree, whereas it is almost unheard of for a white parent to 'force' their kids to study a certain subject. I was effectively left to my own devices once I became an adult.
The whole pressure from parents / marrying young thing isn't nearly as important in white families as it is in Asian families who seem to be much more prestige and status orientated. Indeed, I would argue that in modern western culture, marrying young is frowned upon, as is marrying for money / status. It seems to me that a lot of Asians have a 'become a doctor at any cost' mentality, which would explain why so many British Asians have a plan A, B and C for becoming a doctor, whereas most white students only have a plan A.
Also I just realised that Eastern European Medical degrees do not qualify for student finance, therefore the cost of the course must be paid by the student. Most 18 / 19 year olds do not have the money to pay for 6 years of tuition fees and living expenses, therefore their parents would have to pay. As someone mentioned in a previous comment, Asians parents are much more likely to pay for their kids education, especially a medical degree, whereas this would be much less likely for a white person. I know as a white person, if I asked my parents for the money, they would tell me to f**k off and it would be much the same for most of my white friends. For that reason alone, studying abroad is off limits to most white people unless they come from a very wealthy family.
This is likely the explanation why there are so many more British Asians who study Medicine in Eastern European countries compared to white British people. Very intriguing. As I mentioned above, the huge amount of British Asian students in Eastern European med schools caught my attention, I thought there must be a reason for this. I think I now understand the reason. I respect anyone who is determined enough to reach their goals that they would move to a foreign country for 6 years in pursuit of achieving it.