The Attorney General has referred the sentences of Pc Andrew Harper’s killers to the Court of Appeal under the Unduly Lenient Sentence scheme.
Henry Long, 19, was jailed for 16 years and 18-year-olds Albert Bowers and Jessie Cole were each sentenced to 13 years in prison for the manslaughter of the Thames Valley Police officer.
Suella Braverman said: “This was a horrific crime which resulted in the death of a much-respected police officer while he was on-duty, protecting his community.
“Having personally considered the details of this shocking case, I have decided to refer the sentences of Pc Andrew Harper’s killers to the Court of Appeal.
“Attacks made against emergency workers will not be tolerated and offenders should be punished with the greatest severity for such heinous crimes.”
Bowers and Cole this week lodged applications with the Court of Appeal seeking permission to challenge their convictions and their 13-year jail sentences.
The widow of Pc Andrew Harper previously launched a campaign for full life jail terms for the killers of emergency services workers.
Lissie Harper is calling for Andrew’s Law, which would mean those convicted of causing the death of police, fire or emergency medical workers would spend the rest of their life in prison.
She said: “I pledge to my late husband to never stop until I have made the difference that this country clearly needs.
“I vow to stand strong and firm with so many other honourable people in our country to make the changes that we clearly know to be justified.”
The campaign is being backed by the Police Federation of England and Wales, which represents thousands of officers up to the rank of chief inspector.
The 28-year-old newlywed, a traffic officer for Thames Valley Police, died in horrific circumstances on August 15 last year when he tried to stop the trio fleeing after they stole a quad bike in Stanford Dingley, Berkshire.