Freerunning, parkour and urban acrobatics involves climbing, running, jumping in variable terrains. The facilities at Fluidity Freerun Academy here in Cardiff are the best in the UK and have instructors to teach you any move you want to learn, in a safe and supportive environment. You don't have to have done anything like this before to give it a go!
Session costs £5 and that includes 1.5 hours playing around in the centre and transport to and from the students union. Buy tickets on the union website.