No, visa will only be granted if medical checks and police checks are ok ( or supporting evidence is provided ) from what I gather everybody needs a health check. You will need police checks for every country you have resided in for the last 10 years ( I think) Police check comes back in around 10 days. You have to use a medical examiner from a list on the immigration website. There will be plenty in London. Sent from my iPhone using PomsinOz