Just wear casual clothing you feel comfortable in and make sure you wear or bring socks. That's because you'll be kitted out in a climbing suit, a harness and a pair of specially soled sturdy climbing shoes for your experience.

At first you're bound to be a bit nervous. After all, it's not every day you set out to walk up and over one of London's most famous landmarks. And is IS pretty high out there. Once you get into your stride you'll be able to really enjoy the walk, hearing the hustle and bustle of London life and taking in the views as you go.

At the very top you'll be 52m off the ground on these O2 experiences!

Yes, I can be a bit windy up there. You'll be outside, climbing across that famous white-domed roof, so you're exposed to the elements.

Allow around 90minutes in total for these O2 experiences. The climb itself takes around one hour.

Yes you can, but only from the viewing platform at the summit of the climb. You'll need to make sure your phone or camera is attached or zipped away whilst you climb, so it doesn't fall.

The famous dome was built in 1999 to house the Millennium Exhibition, which ran from 1st January to the 31st December 2000. Once vacated, the O2 arena was built inside the dome, to become a music, leisure and events venue. Since opening in 2007, it has become the world's busiest music venue, selling over 1.8million tickets a year for concerts.

It's actually a plastic-coated fabric that is tensioned over the roof to create the iconic dome shape.

At first you're bound to be a bit nervous. After all, it's not every day you set out to walk up and over one of London's most famous landmarks. And is IS pretty high out there. Once you get into your stride you'll be able to really enjoy the walk, hearing the hustle and bustle of London life and taking in the views as you go.

These experiences run in all weathers, but if the weather means the organisers deem it unsafe to run the activity, you will be able to rebook for another date.

It's no coincidence that the dome is 52m high - it represents the weeks of the year. Then there are the 12 equally-spaced 100m-high yellow support towers - set out like a clock face to represent time and the 12 months of the year. Whilst you're walking up the sides of The O2 on your experiences, you might not realise it, but the dome is completely round. And it is actually 365metres in diameter, to represent, yes you guessed it, the number of days in the year. You see, architect Richard Rogers was quite clever when it came to his Dome. And now there's no doubting that the big white dome has now become an iconic landmark of London.

There's a large round viewing platform, from where you'll be able to gaze out across London, take your smiling selfies and generally congratulate yourselves on have made the climb up the O2, before tackling the downward slope on the other side.

Your Climbing Guide will talk you through everything before you tackle the climb, including safety procedures and the kit that you'll be wearing.

These experiences are not suitable if you are or think you are pregnant. You will be wearing a snug-fitting harness and the activity requires a fair amount of physical effort, being on your feet for about an hour.

The minimum age is 9 years old and the minimum height is 1.2m. There's a maximum weight of 21 stone and for the harness, there's a maximum waist of 125cm and upper thigh maximum of 75cm.

The O2 climb is one way, that's to say you climb up to the middle and back down the other side, so there's no turning round and going back. Your climbing guide will be there to help you conquer any nerves you have and encourage you to continue.

Yes they are. Your guide will be with you every step of the way, telling you about the landmarks you can see, encouraging climbers and making sure everyone progresses in a safe and secure fashion.

No, but during the summer months the last departures run until 20:30 in the evening, so you may catch the start of the sun setting over the London skyline.

The O2 Arena is on the regenerated Greenwich Peninsula area, on the edge of the River Thames in East London and easily accessible for all corners of central London by public transport.