Ninja Warrior UK Adventure Park, Guildford

The Guildford site brings the ITV programme's obstacles indoors, with the Warped Wall alongside climbing, balancing and swinging challenges. What sets it apart from some of the other sites is that it also has soft play areas, so it copes better with a group that spans a wide age range. Sessions are supervised and timed, and it sits on the Slyfield estate just north of the town centre.