The three teenagers facing prison time for the death of PC Andrew Harper have today been found not guilty of murder, but all three guilty of manslaughter.

Henry Long, aged 19, of College Piece, Mortimer, Albert Bowers, aged 18, of Windmill Corner, Mortimer Common, and Jessie Cole, aged 18, of Paices Hill Travellers Site, Aldermaston will be sentenced next Friday, July 31.

FULL UPDATES: PC Andrew Harper killers face prison for manslaughter

It follows the four-week trial in the death of the 28-year-old Thames Valley Police officer who was killed as he tried to apprehend the quad bike thieves on the night of August 15 last year.

He had become caught in a tow rope attached to a getaway car and was dragged more than a mile along country lanes in West Berkshire.

PC Harper suffered horrific injuries and died at the scene near the A4 in Berkshire.

ALSO READ:Full statement from PC Harper's widow as husband's killers acquitted of murder

Police have released video footage from the investigation.

WARNING - Distressing footage and strongl language throughout

The initial 999 call

Dashcam footage