Ban outdoor advertising in London

We're calling on Mayor of London Sadiq Khan to follow his fellow Mayors in Sao Paulo and Grenoble and take action to ban outdoor advertising - or, at very least, place restrictions on it (in the same way that there are restrictions on other things that have harmful effects). We welcome his intervention on sexist advertising, but we're asking him to go further; Sadiq has pledged to take action against air-pollution in the Capital: will he take action to protect Londoners from harmful visual-pollution too?

Because advertising sh*ts in your head.