April 2004 - Storms out of Eastlands before kick-off after being axed from the Manchester City side to face Southampton.
July 2004 - Sparks a mass brawl in a pre-season 'friendly' against Doncaster.
December 2004 - A Christmas bash for Manchester City players sees him stub a lit cigar into the eye of young team-mate Jamie Tandy. He is fined six weeks' wages by City.
May 2005 - Breaks the leg of a 35-year-old pedestrian while driving his car at 2am in Liverpool city centre.
June 2005 - Involved in a spat with a 15-year-old Everton fan at City's team hotel in Bangkok. Again he is fined by City.
October 2006 - The bad blood with Everton fans continues in 2006 when he drops his shorts in the direction of home fans at Goodison Park. He is fined and warned by the FA for his conduct.
December 2006 - Blasts England players releasing autobiographies after an unsuccessful World Cup campaign. "England did nothing in the World Cup, so why are they bringing books out? 'We got beat in the quarter-finals, I played like s***, here's my book'. Who wants to read that? I don't," he says.
February 2007 - Makes his England debut against Spain, replacing Frank Lampard, one of the players he was thought to have aimed his earlier criticism at.
March 2007 - Arrested on suspicion of assault and criminal damage in an incident involving a taxi driver. He is alleged to have ripped out the cabbie's radio because he would not wait at a McDonald's drive-through while Barton got food. He is later found not guilty of vandalising the taxi. His cousin, Joshua Wilson, 19, admitted doing the damage.
May 2007 - Involved in a training ground incident with Manchester City team-mate Ousmane Dabo, who presses charges. Barton admits assault and in July 2008 is given a four-month suspended jail sentence. In November 2008 he is also given a six-match ban, with a further six suspended, after admitting an FA violent conduct charge relating to the incident.
June 2007 - Sold by City to Newcastle Utd for £5.8 million. Aims parting shot at City boss Stuart Pearce, blaming his departure on a "relationship breakdown" between the pair.
November 2007 - The press reacts furiously to a studs-up challenge on Sunderland's Dickson Etuhu during the Tyne-Wear derby. "Ban him" screams the News of the World headline. He escapes FA sanction.
December 2007 - Sits out Newcastle's Boxing Day game through injury, but goes drinking in Liverpool city centre afterwards. In the early hours of December 27 he gets into a row in a McDonald's and violence again breaks out. Drunk, Barton straddles his victim, punching him repeatedly in the face. He is refused bail and is forced to spend the New Year behind bars.
May 2008 - Admits assault and affray and is jailed for six months, of which he serves 74 days at Strangeways prison in Manchester,
November 2008 - Escapes FA action after an on-pitch incident involving Aston Villa striker Gabriel Agbonlahor. Media reports claim Barton made a racial slur but Agbonlahor decides not to pursue disciplinary action.
May 2009 - Sent off on first game back from a long-term injury against Liverpool for a wild tackle on Xabi Alonso. Suspended by club following claims of a dressing-room row with manager Alan Shearer.
November 2010 - Charged with violent conduct by the FA after allegedly punching Blackburn's Morten Gamst Pedersen during their Premier League match.
August 2011 – Admits 'exaggerating' the contact made on him by Arsenal player Gervinho who was sent-off for hitting Barton.
August 2011 - Newcastle transfer-list Barton, making him available on a free transfer. Signed by QPR on a four-year deal.
August 2011 – Goes on Twitter and television to criticise Wolves midfielder Karl (or Kelvin, as he called him) Henry's aggressive style of play. "No one knew Kelvin Henry before he started kicking lumps out of me," said Barton.
October 2011 – Claims the FA tried to get him to moderate his language on social networking website Twitter before insisting he had no intention of doing so.
December 2011 – Dismisses comments made by Newcastle managing director Derek Llambias, who he calls owner Mike Ashley's "fat mate", and asks Llambias to take a lie detector test over the midfielder's exit from the club.
January 2012 – Is sent-off against Norwich City for headbutting Norwich's Bradley Johnson. The decision is vigorously contested by Barton but he loses his appeal.
January 2012 - Launches an amazing attack on recently sacked QPR manager Neil Warnock, telling him to "shut it" and comparing him to hapless film character Mike Bassett.
January 2012 - Unleashes an online tirade against the FA, labelling them an "Orwellian organisation" in need of a "drastic shake-up".
February 2012 – Makes a series of online comments about John Terry ahead of his trial for an alleged racist remark but escapes prosecution from the Attorney General.
March 2012 – Hits out at QPR fans who booed him during a poor performance against Liverpool.
May 2012 – Banned for 12 matches by the FA for his red card at Manchester City and subsequent behaviour. Barton was sent-off for elbowing Manchester City's Carlos Tevez and was later found guilty of kneeing Sergio Aguero from behind then headbutting Vincent Kompany.