As far as I know it doesn't happen in the UK at all. I have placed 200+ orders with Amazon in last year alone and haven't had any issues except for a couple deliveries which were a day late(Amazon extended my prime by a month each time). 99% of my deliveries arrive in 1 day as promised. They have exemplary customer service as well. In a way, I don't understand why you'd buy from anyone else but amazon :P