The take-up for the Olympic football tournament has been so negative that half a million tickets are to be withdrawn from sale. Organisers admitted that with only a week before the start of the Games many matches outside London will have empty seats. Tickets at Cardiff and Glasgow have been particularly difficult to sell.

The surprise announcement came only one day after the captain of the men’s team, Ryan Giggs, enthused about being part of the event and said he hoped there would be lots of supporters. The matches that involve the British team have sold well, however games in the other venues around the country are struggling to attract a crowd.

With a million football tickets left unsold, Locog, the London organising committee, took the decision to halve the number remaining and close off parts of the stadiums. In Cardiff, the 74,500-capacity Millennium Stadium is expected to have its top tier closed for most matches apart from when Britain’s men play Uruguay. Locog still faces a race against time to sell the 450,000 that remain available – around 200,000 of those are returns from National Olympic Committees.

Locog insists it is “delighted” with sales for the football competition, saying that with 1.6 million already sold that is more than at Euro 2012. They also point out sales of women’s matches far outweighs anything previously seen in this country. For Hope Powell’s side’s first game in Cardiff against New Zealand on Wednesday – two days before the opening ceremony – 37,000 fans are expected. The women’s English cup final at the Emirates drew around 5,000 this season.

Sales in Glasgow, which will host eight games at Hampden Park, are believed to have been particularly sluggish, with around 80,000 of the 250,000 originally put on sale gone. Spain against Japan is the pick of the games in Glasgow – Egypt against Belarus is somewhat less attractive. Adult tickets for matches cost between £20 and £40.

It is in Glasgow that the greatest number of tickets – some 50,000 – has been distributed free to schools and youth groups through the Ticketshare scheme. In all, 200,000 tickets across all Olympic sports have been given out in this manner. Ticketshare is funded via sales of hospitality tickets and packages for the Games – so allowing organisers to give them out for free.