Go Ape offers the closest thing you'll get to an adventure in the forest, without having to trek into the depths of the Amazon. Battersea Park is their second London location (the first being Trent Park) where you can go wild climbing ropes and swinging from trees, just like Tarzan.
You can ride on segways through the forest, hop on a mountain bike and zip wire over trees. For when you need a break there are sit-down activites like a session of African drumming. Brunch is included and there's even a BBQ.
The experiences last 2-3 hours, and kids are welcome as are stag dos and corporate events. You don't have to be a superhero to take part - anyone who is able to climb up a rope is fit enough to do the courses.