Dashcam footage of search for PC Andrew Harper shown at his murder trial

Dashcam footage has been played to the jury in the murder trial of police officer Andrew Harper showing the desperate search for him after his feet became entangled in a tow rope.

The 28-year-old Thames Valley Police officer was dragged for more than a mile as he answered a call about a vehicle theft in August last year. A warning: this report contains distressing details.