It might be difficult to imagine a scenario where a person, born in the United Kingdom 53year ago, following a change of name is issued a British passport (with the passport office fully aware of the former name), but only for the home office to subsequently take deportation action against him years later, on the basis that he is not British.
But that is exactly what the Home Office sought to do to a man who was born in the UK in the early 60’s to parents of Nigerian origin, who were residing in the UK at that time.