What happens if I lose or forget my tickets? Toni 16 June 2022 11:21 Updated Follow Don’t worry. Email email@example.com. Make sure you have your payment details and reference numbers ready. Related articles What happens if I'm late? When should I arrive for my climb? How do I get to Up at The O2? I’ve got a fear of heights. Can I still climb? Do I need to book in advance? Comments 0 comments Article is closed for comments.