Westminster Hero: PC Keith Palmer's last selfie

He's the man who gave his life to protect Parliament. Now a fundraising page in honour of PC Keith Palmer has raised nearly more than 600 thousand pounds.
Alongside his main duty though, he so often fulfilled another - posing happily for photos with visitors. One of them was American tourist Staci Martin, who took a selfie with him 45 minutes before the attack - it's believed to be the last picture of him alive.