© Licensed to London News Pictures. 16/09/2018. London, UK.  Community activists erect hoax street signs in residential streets near Columbia Road, east London this morning to highlight the high levels of drug dealing, where the cheapest heroin in Europe can allegedly be purchased. The anti drugs street art campaign called the 'Columbia Road Cartel' has been commissioned by the Weavers Community Action Group in Shoreditch, Tower Hamlets. Photo credit: Vickie Flores/LNP