London security under review after Nice attack
London Mayor Sadiq Khan said he will be "reviewing our own safety measures" following the attack in Nice.
Mr Khan declared the capital would "stand united" with France and insisted the "poisonous and twisted" terrorists would be defeated.
Sadiq Khan offered his "deepest sympathies" to the people of Nice. He described the attack as "a horrific and unspeakable act of terror on a day of celebration".