If you're going to Dagenham and haven't booked a ticket yet, I have 2 adult tickets pre booked if anyone would like them. The reason is that my friend had ordered a pair, not knowing that someone else had also ordered a pair, meaning they have 2 spare.
If you want to avoid the queues, or risk it being full when you get there, and want the guarantee of two tickets, please send me an PM with a phone number and I'll sort it out for you. They will be £31-50, which I believe represents a saving on paying at the gate.