We have just arrived home this morning. You are only allowed to take 100ml through security and that has to be in a plastic bag but once you are through you can take as much on the plane as you want. We bought about 5 bottles and had no problem and was never asked to show a receipt.One thing that i did notice was that manchester were very strict about the size of your hand luggage,i only had a small handbag and that was classed as my carry on. Coming back from Orlando it was completely different, there were people with wheelie cases, large stuffed toys etc and no problem.