at the minute , if you are over 18, you can only skate the white grounds skatepark at london bridge between 6pm and 8pm on weds. if you go down there at any other time you will be turned away from the facility . the reasoning from the area managers is;
 "In the case of Whites Grounds, we are not permitted to allow unaccompanied adults on the site at any time as young people.
If a young person was to be assaulted or groomed during our supervised sessions, we would be held accountable."
having a fixed age restriction at a public skatepark , in my experience, is unheard of. so in short , please vote to try and change this policy and let the skateboard community of the uk/london enjoy this park on any day , and at any age.