yes, they were part of a performance, banned by s.40 of lambeth's park and open spaces bye-laws, of a business touting for trade, banned under s.38 of the council bye-laws.
why not? you can exercise at home, you know, you don't need a load of visual adverts - trip hazards for the visually impaired - lying round the place. do you think people with poor sight or indeed blindness ought to have to contend with exercise performances where they might have a sit and chat or simply rest their guide-dogs' legs?