Dr Gerald Toben was held last month at Heathrow Airport on a European arrest warrant.

The revisionist historian was accused of publishing anti-Semitic material on the internet.

The German authorities have now dropped an appeal to the High Court after Britain refused to hand him over.

The case against him is now closed and Mr Toben is waiting to get his passport back from the British authorities.

Holocaust denial is a crime in Germany and offenders can face up to five years in jail. It is not a crime in Britain.