'Roof' show on top of car park in Waterloo

This is an open-air theatre experience with a difference.

The show, 'Roof', takes place on top of a car park in Waterloo opposite the National Theatre and the audience wear headphones.

BBC London's Entertainment Correspondent Brenda Emmanus finds out more from the choreographer Frauke Requardt, and dancers Kynam Moore and Si Rawlinson.