Check with some of the suppliers on her under the supplies for sale. Some of the things you need may be available that way. I'm sure others from here will be more helpful.
I'm no help with the UK sites, but I do ship overseas regularly and actually have one package going out to the UK tomorrow as well as one to Canada and Germany.
Shipping depends on the amount you buy, if it's just toys, they normally aren't too heavy and can go first class.