- Copyright: Metropolitan Police
On the eve of his retirement, PC Nick Carlisle has taken part in the annual UK Police Unity Tour in memory of his fallen colleague PC Keith Palmer.
He witnessed his friend's murder when PC Palmer was stabbed by Khalid Masood within metres of him during the Westminster Bridge attack in 2017.
Unarmed, PC Carlisle tackled Masood so his colleague could get away but PC Palmer died later of his injuries.
The UK Police Unity Tour sees officers and staff cycle 180 miles in memory of their fallen colleagues and raises money to support the families of officers who have died on duty.
After presenting his fallen friend's family with a red rose at the end of the ride, PC Carlisle said he was leaving the force with "thoughts of colleagues who have sadly not made it to retirement”.
By Dominic Casciani
Home affairs correspondent
- Copyright: BBC
Attacks on the Met Police's Deputy Commissioner for locking himself in his car during the Westminster attack have been criticised as "confused, unpleasant, personalised and ignorant" by London's most senior police officer.
Sir Craig Mackey, the Met Police's acting chief at the time, witnessed the murder of PC Keith Palmer in Westminster from a locked car.
He told an inquest into the attack his instinct to get out of the car when he saw Khalid Masood attack, but he stayed because he had no protective equipment.
"For obvious reasons, whilst the inquest has been underway I have not made any comments on the extraordinary amount of confused, unpleasant, personalised and ignorant commentary by some on the actions of the Deputy Commissioner" Commissioner of the Metropolitan Police, Cressida Dick, said
Speaking at the conclusion of the inquest,Ms Dick said: "These criticisms are simply not supported by the evidence. As the Chief Coroner has made clear there was nothing he could have done to stop Masood.
"PC Palmer was under attack practically as soon as Sir Craig saw the attacker. What Sir Craig did was sensible and proper, and was intended to protect others in the car with him."
"I welcome the Inquest conclusion that our officers acted lawfully in shooting a terrorist and murderer.
"The professionalism, bravery and compassion shown by the plain clothed officers in stopping a terrorist and then immediately trying to save his life are in the best traditions of policing. They, and so many other Met officers that terrible day, did an incredible job responding in very difficult circumstances.
An inquest has found that Khalid Masood, who carried out a terror attack at Westminster in March 2017, was lawfully killed by police.
The husband of Aysha Frade who was killed during the Westminster attack said no-one should have to go through the "horrendous pain".
Melissa Cochran on how her husband pushed her out of the path of the Westminster attacker last year
- Copyright: James West
The chief coroner has called for "distressing" pictures of victims of the Westminster attack to be removed from the internet.
The inquest at the Old Bailey has heard how bystanders used selfie sticks and mobile phones to take snaps of the dead and injured on 22 March last year.
Graphic video and pictures were posted on social media, with some remaining in circulation more than a year later, compounding the anguish of loved ones, the court heard.
They included images of the body of Aysha Frade, who was trapped beneath the wheels of a bus after being hit by Khalid Masood's hire car.
In his concluding remarks, coroner Mark Lucraft QC said: "From some of the CCTV footage it is clear some people took photographs and moving footage.
"Some of that footage was sent to the police to assist with the investigation.
"Sadly, some people, for whatever reason, have put some of that material on the internet. Some of that material is very distressing to the families and I would encourage that it is removed."
Masood, 52, drove into pedestrians on Westminster Bridge, killing Ms Frade, 44, American tourist Kurt Cochran, 54, retired window cleaner Leslie Rhodes, 75, and Romanian tourist Andreea Cristea, 31.
He then stormed through gates near the Houses of Parliament and fatally stabbed PC Keith Palmer with two knives.