Because of the nature of the experience there are some things to bear in mind before you book.

There’s a minimum height of 1.2m and a maximum weight of no more than 21 stone/130kg/286lbs.

You’ll need to have a waist measurement of no more than 125cm and a maximum upper thigh measurement of 75cm.

As you’ll be out in the elements, make sure you wear appropriate clothing for the weather, including socks which must be worn.

Up at The O2 isn’t suitable if you’re pregnant.

Climbers must not be under the influence of alcohol or legal or illegal substances. You won’t be permitted to participate and won’t be refunded.

For more information check their health and safety page.