A drug-driver had cocaine and ketamine in his system when he was caught swerving across an A-road last summer. The case of Joel Desborough, 27, of Nethergate Street in Harpley, was dealt with in his absence at Lynn Magistrates’ Court on Thursday. Through his solicitor Alison Muir, he pleaded guilty to three offences – possession of a Class A drug and two counts of drug-driving. He committed the offences on June 5 last year while driving a Renault van along the A17, being pulled over by police after they spotted him breaking harshly and swerving across the road. Crown prosecutor Holly Postle to…