Police are urging parents to educate themselves on the warning signs of gang culture and county lines drug dealing - Credit: Getty Images/iStockphoto Police are urging parents to educate themselves on the warning signs of gang culture after new research revealed a third of adults in the UK did not know what 'county lines' drug dealing is. A further 38% of parents would not know what to do if their child became involved in county lines dealing, according to anti-slavery charity Unseen. The findings are part of a new campaign by the charity to raise awareness of county lines among parents, carers and other adults, and to encourage them to get help.