Always have great faith in Seatwave.
Had booked to see Jessie J at the O2 for her concert, first scheduled last October -2012. Due to all manner of reasons - Jessie's tv appearances and album recording etc the event was then moved two subsequent times but Seatwave kept me well informed by e-mail and when we eventually went to see her on Wednesday evening this week there was no quibble at all at the door that our tickets were A YEAR out of date!!! Thank you Seatwave - I have every confidence in you when booking tickets. The concert was pretty good too!