POLICE have pledged to continue the drive to pinpoint and disrupt the activities of organised cannabis growing gangs in the wake of the conviction of two leading figures in a large-scale operation. It follows the discovery of a drug farm in a disused office block, Ridgemount House, in Peterlee town centre, on April 20, last year. The five-storey building had been completely modified for the professional set-up and the electricity supply was so dangerous it had to be completely turned off as a safety precaution. Officers found the fifth-floor being developed for the growth of a substantial number of plants, aided by almost £60,000-worth of cultivation equipment, with free power following tampering of the electricity supply.