Man, 18, and boy, 17, detained on suspicion of causing serious injury by dangerous driving in Southend-on-SeaTwo people have been arrested on suspicion of causing serious injury by dangerous driving after an incident involving a loading vehicle which has left a teenage girl in a critical condition in hospital.Police attended the Chalkwell Park area of Southend-on-Sea, Essex, at about 12.30am on Saturday after receiving a report of an incident involving a “small articulated loading vehicle”. Cont