Lissie Harper and Debbie Adlam are launching campaigns for “Andrew’s Law”.
It would see criminals convicted of killing emergency services workers spend the rest of their lives in jail.
Lissie has vowed to fight for a change in the law in memory of her late husband, so that anyone killing a police officer, firefighter, nurse, doctor or paramedic is jailed for life.
She's backed in this official campaign by the Police Federation of England and Wales.
Lissie intends to call for the law change in high-profile meetings with Prime Minister Boris Johnson and Home Secretary Priti Patel in the coming weeks.
She is calling on the British public and politicians of all parties to back her in her campaign.
Oxfordshire PC Andrew Harper was killed on 15 August last year by Henry Long, Albert Bowers and Jessie Cole. The trio, all from near Reading, were convicted of manslaughter last month but cleared of murder.
19-year-old Long was jailed for 16 years and Bowers and Cole - both 18-years-old - were sentenced to 13 years.
Lissie 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.
"I hope that by creating a new ‘Andrew’s Law’ - that sees any person who commits a crime that results in the death of an emergency worker being jailed for life - that those that have to go through what I have been through in the future get the justice that they rightly deserve.
“As a widow of a police officer - a title in which I would give everything to not have - I have witnessed first-hand the lenient and insufficient way in which the justice system deals with criminals who take the lives of our emergency workers.
“I have grown close to our under-appreciated protectors ever more since the death of Andrew, I have been enveloped in love and support from not only the police and other emergency workers but so many of the general public too who I know fully support my feelings over the verdict and sentences in which Andrew’s killers have received.
“The people responsible for wreaking utter despair and grief in all of our lives will spend an inadequate amount of time behind bars. These men who showed no remorse, no guilt or sorrow for taking such an innocent and heroic life away will find themselves able to live out the rest of their lives free and able to commit more crimes and continue to put people in danger when they are released in a very small number of years.”
Meanwhile, Deborah Adlam, the mother of Pc Andrew Harper, has also launched a campaign for tougher punishments for those who kill police officers.
She says the 16 and 13-year sentences the three teenagers received, don't fit the crime:
The Attorney General is currently reviewing their sentences to see if they were too lenient.
We're aiming at the law changes called #AndrewsLawUK after the tragic loss of PC Andrew Harper, this is the Official page for all the latest news and updates from his mother Deborah. Andrew gave his life for the greater good and his pledge to protect and serve the general public. pic.twitter.com/xhFKXkQExU— Andrew's Law UK (@AndrewsLawUK) August 5, 2020