Just an update. I just looked at the Jessops service and their prices for basic prints are cheaper and there's no postage. They don't offer the larger formats like Fuji do and Fuji is cheaper for some of the speciality items [mousemats, mugs etc.].
HOWEVER, Jessops currently have an offer of your first 10 7x5 prints absolutely FREE. [Yes, FREE!] So it might be a good time to get some stuff done