Prime Minister Theresa May has issued a defiant message as parliament resumes business following yesterday's attack in Westminster.
Speaking in the House of Commons, May noted that MPs had returned to Westminster "as normal".
"We are not afraid, and our resolve will never waiver in the face of terrorism," she said.
"We meet here in the oldest of all parliaments because we know that democracy and the value it entails will always prevail."
May described the attack as one "on free people everywhere".
"A terrorist came to the place where people of all nationalities and cultures gather to celebrate what it means to be free. And he took out his rage indiscriminately against men, women and children," she said.
The attack injured forty people, and May said that victims included nationals from France, Romania, South Korea, Germany, Poland, Ireland, China, Italy, the US, and Greece.
The Prime Minister added that two of the three police officers injured on Westminster Bridge yesterday remain in a serious condition.
Police have made eight arrests in Birmingham and London in association with the attack, and May said that while authorities are not yet ready to publicly identify the attacker, he was British-born and had previously been investigated in relation to violent extremism, although she added he was "not part of the current intelligence picture".
May also paid tribute to PC Keith Palmer, the British police officer who was killed yesterday in the attack, describing him as "every inch a hero".
It came minutes after House of Commons speaker John Bercow paid his own tribute to Palmer, adding a review of security measures would take place.
May last night stood in Downing Street and condemned the "sick and depraved attack".