There was increased security at Heathrow Airport in London as the former world heavyweight boxing champion Mike Tyson arrived for a visit cloaked in controversy.

Despite his conviction for rape in the United States, the British government decided to grant him special permission to enter the country.

But anti-rape campaigners are reported to be asking the high court to overturn the government's decision and effectively ban him.

He's here to fight the British boxer Julius Francis in Manchester later this month.

From the newsroom of the BBC World Service