Westlife TIckets 12/5/12 at London O2 Ground Floor Seating. Either to sell or Swap for another date +

I have 2 Tickets for the First night of the Sold out Westlife Farewell Tour on 12/1/12.. They are good seats in Block C3 row A. I am looking to either sell these tickets for £250ono or swap them for the performance on 23/5 or 24/5. If you are interested please Josh on 07894 685 845