Can I do Up at The O2 if I'm pregnant? Toni 17 May 2022 16:29 Updated Follow Unfortunately, not. The harness is pretty snug and the climb is physically demanding. Related articles How do I know if I can complete the climb? Will I need any training before I complete Up at The O2? Can I get a refund if I’m scared or worried I’ll not complete it? How high is Up at The O2? Is Up at The O2 accessible for climbers with disabilities? Comments 0 comments Article is closed for comments.