Plot hole: If Ashley kisses somebody, her good luck is passed on to them. However, Ashley kisses Chris Hemmington before she kisses Jake, so shouldn't Chris Hemmington have her luck?
Continuity mistake: When the guy on the train drops the £1 note, Norman lets two women stand next to him before he picks it up. You can see the women's legs next to his, but when he bends down to pick up the money, the women's legs have disappeared and you can see the legs of the man who dropped the money. In the next shot the women's legs are back.