The site allocating tickets for the London 2012 Anniversary Games is experiencing delays.
It comes after a similar system was criticised during the Olympics last summer, which meant people missed out on seeing the events that they wanted to.
However if you have already registered the 'Ticket Master' links and website are still working.
To try and get tickets, you must register. You can do this at British Athletics website, although it is experiencing problems at the moment.
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