Are there stores in the UK that offer online ordering and pick-up in store? (for kids' toys)

For instance, in the US, Circuit City used to offer such a service where by you could order a product online and then go pick it up from the local store. Barnes & Noble, Borders also offer this service. Wondering which, if any, stores in the UK offer something similar. Any chance one of these will let me pay online for someone else to pick up from the store? I want to buy toys as a gift for my niece in UK, I am in the US.