The reigning Miss England has relinquished her crown after being accused of a fight in a bar.
Pageant organisers say Rachel Christie has also withdrawn from next month's Miss World competition in South Africa.
They said in a statement that the 21-year-old heptathlete will now focus on clearing her name and training for the 2012 Olympics.
British newspapers reported that Christie got into a dustup with another beauty queen - Miss Manchester Sara Beverley Jones - in a nightclub earlier this week.
Greater Manchester Police said on Friday that a 21-year-old woman was arrested on suspicion of assault after an altercation at the city's Mansion nightclub on Monday. She was released on bail pending further enquiries.
