So I bought two vouchers on groupon for the following deal - http://www.groupon.co.uk/deals/manchester/BBCPhilharmonic/173760
Unfortunately my sister and her friend now can't come - they were intended as an early Christmas present. So I'm left with two vouchers I don't need. With these codes you can ring up the box office and exchange them for tickets (or I can do this for you)
So, if anyone missed out on this deal (there were only 128 tickets available) please let me know.