A former bodyguard for the Rwandan president Paul Kagame says he has been warned by the British police that his life is in danger from the Rwandan government.
Noble Marara has refugee status in Britain and is an outspoken critic of President Paul Kagame.
He recently published a book in which he accused Mr Kagame's rebel group of shooting down the plane carrying the former president - an event seen as a trigger to the 1994 Rwandan genocide.
Mr Marara also accused Mr Kagame of committing atrocities during the genocide.
The president has repeatedly denied this accusation and his government has denied previous reports of plots to kill dissidents.