You will have to bag the money according to the amounts shown on the bags. This is standard, and I'm not sure that loose coinage in any amount more than that is technically legal tender (eg, you can have �10 worth of 10p pieces in a bag and �1 worth in loose change, but if that �10 wasn't bagged, then it wouldn't be legal tender - I think).
When I say �10 worth, I'm not sure what the actual amounts are, so you'd have to check. Angie?
You can get the bags from the bank. You just need to ask, that's all.