Drivers are facing heavy delays on the M20 after an accident which saw a lorry come off the motorway and crash into trees. The HGV is believed to have crashed through a barrier on the coastbound side between Junction 7 (Detling Hill) and Junction 8 (Bearsted). The congestion stretches back to Junction 6 (Blue Bell Hill). Traffic was temporarily held while the emergency services worked at the scene. One lane remains blocked with motorists facing queues of at least one mile. A spokeswoman for South East Coast Ambulance Service (SECAmb) said: “We were called shortly after 12.30pm to reports of a …