A Labour MP has spoken of how he "wrestled" a man to the floor in "self defence" inside the Houses of Parliament.
Paul Farrelly, 48, described the altercation, that took place during a karaoke party at Parliament's Sports and Social Club, as "a John Prescott moment".
The MP for Newcastle-under-Lyme claimed he was confronted by a man in a corridor near the club at around 10pm on Thursday, after reprimanding him about his behaviour.
Mr Farrelly said: "I acted in self defence and wrestled him to the ground to restrain him. It is not good to rise to provocation and you could call it a John Prescott moment if you like, but I was attacked and acted in self defence like any ordinary person would."
He said he did not originally speak out about the incident over fears it would make a "mountain" out of the situation. "The man was behaving very badly inside and I had a word with him about his behaviour and he didn't like it," he said.
However, the Daily Mail said the man, named in the paper as Bjorn Hurrell, 46, was likely to report the matter to police.
Friends of Mr Hurrell, who delivers newspapers in the Palace of Westminster and has had a full parliamentary pass for more than 20 years, told the paper he had been enjoying a karaoke night he helped his mother organise for Parliament's Sports and Social club. They claimed Mr Farrelly had been drinking and entered with a group of people, before becoming involved in an altercation with Mr Hurrell at the bar.
It was reported that the MP had confronted him in a corridor outside the parliamentary bar.
Mr Farrelly denied the claims, saying he had escorted a number of people to the club and was leaving when the incident occurred.
"It was complete self defence," he added. "I was using the sports club but not attending the party and not in a large group - I was just talking to friends I hadn't seen for a long time. This man's behaviour by the bar was quite rude and I had a word with him and he clearly didn't like it. I acted in self defence."