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This is the first picture of a teenager who has admitted to killing PC Andrew Harper during a burglary call out.

Henry Long, 18, pleaded guilty at the Old Bailey in London this morning.

Newlywed policeman Harper was 28 when he was dragged along by a car in Berkshire while responding to reports of a break-in in August last year.

He had been married for 28 days and was due to go on his honeymoon when he was killed.

Alleged driver Long from Mortimer, Reading, denied murder, but admitted manslaughter and conspiracy to steal a quad bike.

(Image: PA)

When Long was asked for his plea to a charge of manslaughter, he said: "Pardon, was that manslaughter?" before adding: "I plead guilty, guilty."

A 17-year-old co-defendant, who cannot be identified, also entered pleas today, pleading not guilty to PC Harper's manslaughter and to conspiracy to steal.

Previously, another 17-year-old boy had entered not guilty pleas to manslaughter and conspiracy to steal.

The three teens are due to face a six-week trial at the Old Bailey from March 9.

(Image: Vagner Vidal/Hyde News & Pictures Ltd) (Image: PA)

A fourth defendant, Thomas King, 21, from Basingstoke, had earlier admitted conspiracy to steal a quad bike.

PC Harper's widow Lissie previously paid tribute to her husband as the "kindest, loveliest, most selfless person you will ever meet".

He was the first police officer to be killed on duty since PC Keith Palmer was stabbed to death during the Westminster terror attack in 2017.