London mayor Sadiq Khan said an attack in central London late on Saturday was a "deliberate and cowardly attack", and that he would take part in a security meeting with Prime Minister Theresa May later on Sunday.

"We don't yet know the full details, but this was a deliberate and cowardly attack on innocent Londoners and visitors," Khan said. "I condemn it in the strongest possible terms. There is no justification whatsoever for such barbaric acts," he added.