The London terror attack was a horrific scene with injured bodies strewn everywhere after a vehicle plowed into pedestrians on the Westminster Bridge. While some simply walked by bodies on the street, others got down on their hands and knees to either administer CPR or to just offer encouragement and comfort for the victims until paramedics arrived.A heroic Team GB boxing coach jumped over a fence before fighting in vain to save a police officer killed in the London terror attack, it was revealed today.Tony Davis, who was visiting the Houses of Parliament for a press conference, put PC Keith Palmer in the recovery position and tried to resuscitate him.The coach from Darlington, County Durham, also revealed on TV how he put his raincoat underneath the officer to try to stem the blood as much as he could.Mr Davis was due to be at the Commons with students from the Hammersmith Boxing Academy in West London to launch a community project.And the former Army staff sergeant, who is a coach for the British Lionhearts boxing team, told ITV s This Morning how he reacted to the horrifying attack.Mr Davis, who served 22 years in the military, was leaving the press event with a group of boxers when he saw the attack taking place.He told the program:  We were leaving the exit parallel to where the crash happened, I had my phone out to take footage for social media about the event. All of a sudden I saw a large chap brandishing two knives come through the gates and start attacking the policeman. At that point instinct kicked in, I leaped over the fence because that guy needed assistance. The police were holding their ground and that is when poor Keith got attacked. You start moving back with adrenaline pumping in.PC Palmer was one of at least four people who died in the terrorist attack at Westminster yesterday afternoon, which left 29 others injured.An unnamed attacker mounted the pavement on Westminster Bridge, mowing down pedestrians before he stabbed PC Palmer and was shot dead by police.As the maniac ploughed along the bridge in his two-ton Hyundai SUV, frequently mounting the crowded pavement, he mowed down pedestrians like ninepins.Of those who managed to dive out of his path, one woman ended up under a bus and at least two more leapt over the bridge parapet in a desperate bid to escape.Among those struck were three police officers returning from a commendation ceremony. Three French teenagers on a school visit were also targeted.A bloodied man who was injured on Westminster Bridge is comforted by a group of peopleThree were killed and many were left with  catastrophic  injuries amid a scene of horrifying carnage. The killer began his rampage at the south side of the bridge.A man appeared to have either jumped or been thrown from the bridge, and had fallen to concrete steps about 18ft below. He lay motionless with a dark pool of blood around his head and his leg obviously broken.Moving along the bridge, a bald man lay on the white line between the bus lane and main carriageway, clutching his head. One of the most harrowing scenes was the sight of a woman s legs poking out from under the wheel of a London double-decker bus. It appeared she was either struck by the terrorist or may have tried to dodge him, only to run into the path of the No 53.For entire story:Daily Mail