A drug-driver who was “struggling to maintain his lane position” on Lynn’s Hardwick roundabout was pulled over by police. Dennis Ngirigacha, 33, of Bridge Road in Downham, appeared at Lynn Magistrates’ Court on Thursday where he admitted to driving above the specified drug limit. Prosecutor Paul Brown said that there were heavy traffic conditions when Ngirigacha was driving his BMW on the busy roundabout at 5pm on October 5 last year. Police were following his vehicle, but officers reported that the car was struggling to maintain its lane position, so decided to pull Ngirigacha over. Officers …