21st Feb 2 tickets for Olympic Test Diving 18th February at the Olympic Park ?

I have 2 tickets for the Olympic Test Diving at the Olympic Park on Tuesday 21st February. They are £30 each. This is a chance to see the Aquatics Centre at the Olympic Park before the main event and watch the 18th Fina Visa Diving World Cup. I can no longer make the event so looking to sell these tickets. Collect from Oxford Circus or in the evenings from Highbury and Islington.