Over the weekend, the biggest unauthorised takeover of outdoor ads occurred in 10 UK cities over 2 days involving 350+ pieces of subversive artwork. The movement is part of "Brandalism" which is a campaign against corporate take-over of public space. If you visit the site, Brandlism offers instructions for how artists and activists can employ similar ad takeovers in their cities.

By John Fekner

By Paul Insect

By Zabou

By Dr. D

To see more great ad takeovers, visit the Brandalism site here.