September 2001: William and Middleton meet at the University of St Andrews in Scotland, where they both study art history.
June 2003: Middleton attends William's 21st birthday party. In a media interview, he insists that he does not have a girlfriend.
June 2003: Claims are officially denied that William is going out with friend Jecca Craig, the daughter of wealthy conservationists in Kenya.
September 2003: William, Middleton and their flatmates move into a cottage.
December 2003: Pair believed to be a couple after she splits from her previous boyfriend.
March 2004: Pair photographed skiing together in Klosters, Switzerland.
June 2005: Couple attend the wedding of one of William's friends.
June 2005: They graduate from St Andrews.
July 2005: Pair holiday at a Kenyan reserve owned by Craig's parents.
October 2005: Middleton's lawyers ask newspapers to leave her alone as press interest in her grows.
January 2006: Pictured kissing at Klosters, days before William begins his army training.
March 2006: Middleton, without William, invited to the Royal Box at the Cheltenham Gold Cup horse race.
December 2006: Middleton watches William graduate as an army officer, in the presence of his grandmother Queen Elizabeth II.
March 2007: William starts army training at Bovington Camp barracks, southwest England.
March 2007: On a night out with army pals, William poses for pictures with arms around girls in a nightclub near his barracks.
April 2007: Couple split, according to media reports.
June 2007: Both appear at the Concert for Diana, William's mother, but sit two rows apart.
October 2007: Couple pictured together for the first time since their split.
April 2008: Middleton attends his Royal Air Force graduation.
December 2009: Queen Elizabeth's lawyers warn newspapers against publishing paparazzi photos of the royals during their Christmas break, fuelling engagement speculation.
January 2010: Middleton watches William graduate from helicopter training course.
October 2010: Couple get engaged in private during a holiday in Kenya.
November 2010: Engagement announced, with marriage due to take place in 2011.