The plight of John Tulloch was highlighted by national newspapers Monday.
Tulloch, former head of Cardiff University's journalism school, was born in India to British parents. Although he has held a British passport, he has been told that he is a "British subject without citizenship."
Tulloch became a citizen of Australia in 1985 while working there, and says he has been told that this canceled his right to remain in the U.K.
The U.K. Border Agency says it's an individual's responsibility to check whether acquiring citizenship elsewhere would affect rights in Britain.