Scientists have made a map of the eye colour of people in Britain. They found out that the most common colour is blue. The scientists say that thousands of years ago, all British people's eyes were brown. The researchers found that 48 per cent of British people have blue eyes, 30 per cent of people have green eyes and 22 per cent have brown. The area around Edinburgh in Scotland was the place where most people had blue eyes. Over half (57 per cent) of those in and around Edinburgh have blue eyes. The southwest of England has the fewest blue-eyed people. Just 35 per cent of people living there are blue eyed. The scientists say they do not know why some regions of Britain have a lot of blue-eyed people.