The UK’s county lines drug dealers are to face tougher sentences under new rules published on Wednesday that add extra penalties for offending involving “aggravating factors” like the exploitation of children and other vulnerable people. County lines gangs are so-called because of their practice of taking advantage of children and others to run drugs and cash across police and local authority boundaries so that they themselves can avoid detection by law enforcement. The gangs are also known for “cuckooing,” meaning they will take over the property perhaps of someone who has addiction issues or mental health problems from where they will conduct their drug dealing activities. The Sentencing Council said in a statement that the new guidelines for judges and magistrates are a response to “a change in the nature of offending” which has seen an increase in the use of minors and at-risk people to “run county lines.” Council member …