Theresa May pays tribute to policeman killed in yesterday’s Westminster attack

London’s worst terror attack in more than a decade has killed four people – and injured around 40.

The attacker is among the dead.

He drove a vehicle into pedestrians on a bridge before stabbing a policeman at Westminster.

Police believe he was inspired by Islamist-related international terrorism.

He stabbed 48-year-old police officer Keith Palmer to death.

British Prime Minister Theresa May’s paid tribute to him and his colleagues.