Half a million tickets for Olympic soccer matches have been withdrawn and stadium capacities reduced due to a lack of take-up, Games organisers said on Tuesday.
Organisers will reduce capacities across venues by closing tiers of stadiums or whole sections of a ground.
Even after the reduction, 250 000 soccer tickets are still available with a further 200 000 set to be put up for sale before the Games begin on July 27.
Games chief Seb Coe defended the move and said soccer ticket sales compared favourably with previous Olympics.
The soccer competition is set to take place in six venues across Britain including the Millennium Stadium in Cardiff, City of Coventry Stadium, Old Trafford in Manchester, St James' Park in Newcastle, Hampden Park in Glasgow and London's Wembley Stadium which will host both the men's and women's finals.
Organisers will also make 150 000 soccer tickets available for school children through their Ticketshare scheme.
Fifty thousand non-football tickets are still available for the Games and a further 200 000 will be put up for general sale in the next ten days.
Tickets are still available for sports including athletics, hockey and beach volleyball, while there are still some seats available in the higher price bands for the opening and closing ceremonies.
Games organisers have been dogged by criticism throughout the ticketing sales process with fans frustrated by online delays.