Have you ever stopped to think about where a 10 note might travel when it leaves your hands? Maybe you gave it to a family member ... or paid for groceries at a supermarket ... or bought your pal a drink at your local pub? Whatever you used it for, have you ever considered where it might go next? Who handled the 10 note? Where did they live? What did they spend it on? How long did they keep hold of it? Take...