A biker has sustained serious injuries after his motorcycle collided with a tractor on the A357 in Dorset this afternoon.The crash has occurred on Thornhill Road in Stalbridge and the motorcyclist is being treated by paramedics at the scene.The road has been closed both ways between the junction of Barrow Hill and Wood Lane and the junction of Thornill Road and Grosvenor Road.The extent of the motorcyclist's injuries is unknown at this stage.Police are appealing for anyone with information about...
