West Ham have been granted planning permission to increase the London Stadium capacity to 62,500.
An extra 2,500 seats will be added once the club are given the all-clear, taking the former Olympic Stadium above the Emirates Stadium and the Tottenham Hotspur Stadium as the biggest club ground in the capital.
'The application to increase the matchday capacity will give an even greater number of our fans the opportunity to watch our exciting team in action in person,' West Ham vice-chairman Karren Brady said.
'Since the regular return of supporters this year, we have seen a terrific response with every Premier League fixture so far this season sold out, and we thank them for their continued fantastic backing including breaking attendance records as part of regular capacity crowds at London Stadium.