An about extra 300,000 seats will be available to sports fans at the 2012 London Olympics as they set out their plans for avoiding the empty stadiums at Beijing.

An extra 500,000 tickets were made available for the Paralympics, bringing the overall total to 10 million.

Of the remaining 25 per cent, about 8 per cent will go to sponsors, 13 per cent to international fans and sports organisations and four per cent to hospitality and travel companies.

Prestige hospitality tickets will account for less than one per cent of tickets on sale, it added.

London 2012 will be hoping to emulate the success of the this year's Vancouver winter Olympics when fans filled the stadiums, creating a vibrant atmosphere, in contrast to Beijing 2008 where volunteers were deployed to occupy swathes of empty seats at many venues.

London Organizin Committee is looking at shortening sessions to keep spectators interested, reducing the number of accredited seats for preliminary rounds, and setting up a system that allows seats to be reallocated after they have been vacated.

Deighton also said it would be looking to squeeze out ticket touts so affordable tickets ended up in the hands of real sports fans.

A 2012 Olympics site was launched on Monday to provide fans with information about events and tickets.