So why didn't you just order it to be delivered from Game.co.uk?
I got my PS4 from them and they delivered it on launch day with no issue. They also typically get new game releases delivered a day before release (sometimes 2) so getting delivery from their website is usually better than going in store.
Online won't allow you to preorder and or pay for anything that's on your rewards card / gift card or I would have. Also, the plan was to get it at mid night as they usually have a midnight launch, meaning I would have it the at least 8-12hrs before. Get home, say it up, download / install any games I've bought and the next day just plug and play.