Three drug dealers have been jailed after being discovered hiding from police - on the roof of a cannabis factory.br The men were arrested after police discovered £200,000 worth of cannabis in a warehouse in Nailsea, Somerset.br The offenders fled onto the roof of the building in an attempt to evade capture but the building was quickly surrounded.br The trio faced a charge of being concerned in the production of cannabis, for which they pleaded guilty and were sentenced to one and a half years each.br The court heard how, on Friday 2 December, officers discovered a cannabis factory and an estimated street value of almost £200,000 worth of the drug within a warehouse.