PC Harper died while responding to reports of a burglary in Berkshire in 2019. Chief Constable Charles was joined by Gwent Police Chief Constable Mark Hobrough, South Wales Police Chief Constable Jeremy Vaughan and North Wales Police Chief Constable Amanda Blakeman among the signatories. PC Harper’s mother, Debbie Adlam, told BBC Breakfast: "We’ve now got a little bit of hope that we didn’t have before. (Image: Thames Valley Police/PA Wire)The campaign led by PC Harper’s widow, Lissie Harper, led Parliament to establish Harper's Law, recognising the exceptional risks emergency workers take while protecting others. PC Harper’s death continues to be a rallying point for calls for justice reform and stronger support for emergency services.