An appeal has been launched following a serious collision between two vans and a lorry. The crash happened at 4pm on July 24, when the vehicles were travelling near the Dartford Crossing on the A282. A white VM Crafter van, orange Volvo lorry and white Peugeot Boxer van crashed just prior to junction 1a. Officers, firefighters and paramedics attended and a woman, who was a passenger in the VW, was treated for serious injuries. She was taken to a London hospital for further medical attention. Road policing officers are investigating the incident and are appealing to anyone who was travelling in…