Images of eight men have been released in connection with the Met’s investigation into violent disorder before this year’s FA Cup Final that took place in June.
Groups of Manchester United and Manchester City fans clashed on Station Road in Harrow on Saturday, 25 May.
The two teams are due to play each other again in the Community Shield on Sunday, 11 August.
Anyone who recognises any of the men in the images is asked to call police or Crimestoppers on 0800 555 111.