I'm going to China soon and am planning on going to either Manchester or London (I live in Birmingham so I have some choice :) - is Manchester less busy though?) to hand in my form for a single-entry tourist visa (and then have it sent back). Can I just turn up without an appointment and wait for my ticket number to be called? Or do I *definitely* have to schedule an appointment just to hand my form in? Also, can I pay on the day?