People of African origin have lived in Britain for centuries, according to genetic evidence. A Leicester University study found that seven men with a rare Yorkshire surname carry a genetic signature previously found only in people of African origin. The men seem to have shared a common ancestor in the 18th Century, but the African DNA lineage they carry may have reached Britain centuries earlier. The connection was found to date back many generations Details of the study appear in the European Journal of Human Genetics. The scientists declined to disclose the men's surname in order to protect their...