Two motorcyclists are taken to hospital after a crash on the M25 near Chertsey. The incident happens at about 5.45pm on Saturday on the junction 12 slip road. Reports state that a man in his 30s and a man in his 40s, both riding motorbikes, collide with each other at the location. Both riders are rushed to hospital with serious injuries, described as life-threatening in the reporting. The available accounts do not provide details on the cause of the collision, including whether speed, road conditions, or other factors are involved. They also do not mention whether any other vehicles are involved, or whether the crash affects traffic in the area. No information is provided about arrests or ongoing investigations. Emergency response and medical treatment are reported for both motorcyclists following the crash.