Nice attack: Mayor of London Sadiq Khan determined to defeat 'sick and evil individuals'ITN

Sadiq Khan is to review security in London in the wake of the suspected terrorist attack in Nice that claimed the lives of at least 84 people. The Mayor of London condemned the killings as an "unspeakable act of terror" and reassured Londoners he would do "everything possible" to keep them safe.

Scores of people including one UK national were also injured when a lorry – reportedly driven by Tunisian man Mohamed Lahouaiej Bouhlel, who lived in Nice – ploughed hundreds of meters through a crowd of people celebrating Bastille Day on Thursday (14 July).

Barricades have been erected in Westminster outside the Houses of Parliament and Whitehall as a precaution and Khan said measures were being reviewed.

"I will reassure all Londoners that today we will be reviewing our own safety measures in light of this attack and that I and the Metropolitan Police Commissioner will do everything possible to keep Londoners safe," he said.

"The Met Police service and the security service do an amazing job every day keeping us safe. They regularly review security measures, but clearly as the terrorists evolve the way they try and hurt us – we have got to evolve how we keep us safe.

Sadiq Khan
Sadiq Khan has reassured Londoners they are safe in the wake of the Nice attackGetty

"After Brussels, after Istanbul, after Nice, the police and security experts rightly review measures to make sure we are safe." The Met would be looking at the attack to learn any lessons it could, he added.

Prime minister Theresa May, who is preparing to meet SNP leader Nicola Sturgeon in Scotland, said she was "shocked and saddened by the horrific attacks in Nice" and that "our hearts go out to the French people."

Nice attack: Cartoonists draw touching tributes to the victimsIBTimes UK

In her first security alert since becoming PM, May reminded the public that the threat level in the UK is already at severe, which means a terrorist attack is highly likely. Her deputy national security advisor has convened a Cobra meeting of officials to review the attack and see what help the UK can provide.