I'm a TA and am going with the school tomorrow for the Young Voices concert at the London O2. Does anyone know if backpacks are allowed, I have no info from the school and can see some info online about backpacks not being allowed. I'll need to take a few pairs of ear defenders for the kids, food etc and I'm worried I'm going to get my bag taken. I have a fairly small rucksack I can fit it all in but I don't want it taken away - has anyone been for this event before and know?