I've stopped using them for pre-orders because their delivery times are awful due to long processing. I was okay with them for items already released, mind, but even delivery times on those have got bad. If I order an item on a Thursday or Friday, it actually won't arrive until Friday the following week. Sometimes if I place an order for an item earlier in the week it can be here by Saturday, but usually not until Monday-Wednesday of the following week.
I live in Cardiff.
At any rate, I'm not happy, so I'm probably going to ditch them unless there's a very specific offer they have available. Retail in the UK is very competitive, especially for games, so it shouldn't be hard to find someone else who is prepared to offer good prices while delivering on time.