The ban on former boxer Mike Tyson from entering the UK is "mandatory" because of the length of his jail sentence for rape.
Under tougher immigration rules introduced in December 2012, there is "a mandatory refusal where a person has been convicted of an offence and sentenced to at least four years' imprisonment, at any point in the past."
Although Tyson only served three years in prison for the crime, he was sentenced to six years.
A campaign group that tackles disbelief around domestic and sexual violence has praised laws barring former boxer Mike Tyson from visiting the UK.
Ending Victimisation and Blame said the ban "sends a message" about the consequences of criminal actions.
We are delighted that Mike Tyson is not being allowed into the UK due to his previous convictions, one of which was for rape.
We believe that this sends a message that his criminal actions have long-term consequences - sadly, the consequences for his victim seem to have been forgotten by both Mike Tyson and his supporters.
Former world heavyweight boxing champion and convicted rapist Mike Tyson has discovered he is banned from entering the UK.
The 47-year-old has cancelled a string of appearances in London as part of a promotional tour for his new book after finding out he was banned from Britain.
His publishers said recent changes to UK immigration rules, including any person sentenced to more than four years in prison being banned from Britain, meant he was unable to travel.
Tweets posted on Tyson's official Twitter account as recently as Friday suggest the boxer was unaware he would be hit by the changes. He wrote: "So, UK fans, who is brave enough to get in the ring and ask me a question?"
Tyson will now promote his autobiography Undisputed Truth in Paris.
Residents of the typhoon-devastated town of Tacloban in the Philippines enjoyed a few rare moments of exultation as boxing hero Manny Pacquiao defeated Brandon Rios of the US today.
Hundreds gathered in a park to watch their countryman clinch the WBO welterweight crown in Macau. The bout was streamed live onto a large screen for the crowd to see.
Tacloban was one of the first large settlements to be hit by Typhoon Haiyan, which left the town almost entirely flattened.
Debate raged on Twitter among boxing fans following Car Froch's controversial ninth round victory against George Groves in Manchester.
That Froch/Groves decision is a shocker! No way he will give him a rematch because he will get dusted.
Watched Froch Groves back ten times. Groves is gone, he's not defending, his head is rolling and he turns his back. Fight over
Groves impressed me , carried himself well. Froch, great boxer, not at the races tonight. Thought his post match lacked decorum.
Carl Froch has retained his WBA and IBF super-middleweight titles with a controversial ninth-round stoppage of George Groves in Manchester.
Froch was floored by a flinging right hand in the opening moments but clawed his way back into the bout and won a spectacular duel when referee Howard Foster jumped in to end the contest in the ninth.
Foster's intervention with Groves still on his feet sparked uproar, with both corner teams briefly squaring off in the ring while a crowd which had started off resolutely pro-Froch roundly cheered the challenger.
British boxer Amir Khan has tweeted his support for former world heavyweight champion David Haye after the 33-year-old underwent re-constructive surgery on his shoulder.
Haye has been told to "seriously consider" ending his 11-year boxing career after the surgery.
@mrdavidhaye retires from boxing after having a shoulder operation and being told not to fight again. All the best bro. Always a champ.
David Haye has tweeted a picture of his injured shoulder which could force him into retirement.
Haye, 33, underwent surgery on Thursday to reconstruct his right shoulder which forced him to pull out of a scheduled fight with Tyson Fury, who reacted furiously to the news on Twitter.
The former world heavyweight champion said the operation was a "crushing blow" to his plans.
Former world champion David Haye underwent surgery on Thursday to reconstruct his right shoulder and has been told to "seriously consider ending his boxing career", Hayemaker Boxing said.
The Londoner has pulled out of his rescheduled February 8 fight with domestic rival Tyson Fury and looks set to end his career permanently after an unsuccessful operation last week.
"It's a crushing blow for me," he said. "I had big plans for next year and the ultimate goal was to win back the world heavyweight title, something my amazing fans deserve.
"What I didn't anticipate was that this year would be the unluckiest of my career and that a number of injuries would disrupt my plans so much.
"Perhaps it just wasn't meant to be. The boxing gods keep hinting that maybe enough is enough and that it's time to finally hang up my gloves."
A Ukrainian boxer Vitali Klitschko known as "Dr. Ironfist" has announced he plans to run for the country's presidency in 2015, the state-run Ukrinform News Agency reported.
Klitschko, 42, said from the Ukrainian parliament rostrum in the capital city of Kiev: "I want to say that I cannot be intimidated or stopped.
"In order to put an end to various attempts to get rid of me as a possible candidate, I want to say that I'm running for president."
With a professional boxing record of 47 wins (41 KOs) and two losses, the 6-foot, 7½-inch heavyweight is the leader of the Ukrainian Democratic Alliance for Reform party.