A man has been charged over the death of a police officer who was hit by a car he was trying to stop.
PC Andrew Duncan, 47, was checking vehicle speeds in Sutton, south London, at 00:50 BST on Friday when the Volkswagon Golf struck him.
The father-of-two died in hospital from his injuries.
Gary Bromige, 25, from South Norwood, will appear at South Western Magistrates' Court later charged with causing death by dangerous driving.
Mr Bromige is also charged failing to stop at the scene of the accident at the junction of Reigate Avenue and Rose Hill, failing to report an accident and driving without insurance
Two men aged 19 and 20 who were arrested on Sunday in connection with the investigation remain in custody at a south London police station.
A woman arrested on Saturday on suspicion of perverting the course of justice has been bailed.
"Loved The a Job"
Earlier, Metropolitan Police Commissioner Sir Bernard Hogan-Howe said: "Andy was a hard working and courageous policeman. He served the community as both a police officer and as a scouting volunteer.
"The night he was injured, he was doing a job that he loved and we all had every right to expect he would return safely to his home and family - tragically that was not the case."
PC Duncan was married and had a son and a daughter.
He joined the Met in 1990 and worked in Battersea, Hammersmith and Fulham, before joining the South-West Traffic Unit in 2004.
Source BBC News