To purchase a Photo Postcard you must register via this form. Once registered you will be emailed a copy of your buyer’s ID. You must have a copy of this ID with you at Photo London to make a purchase. Please note that Photo Postcards can only be purchased at Photo London and will not be available online, over the phone or via email. Registering for a Buyer's ID will not guarantee you a Photo Postcard as they are sold on a first come first served basis.