Trafalgar Square in London has been evacuated by police following reports of a suspicious vehicle.
Numerous eyewitnesses claim to have heard a loud bang, although police have refused to confirm reports of an explosion, or whether it was a controlled explosion, and instead have said "the incident has been resolved".
Tourist Sarah Churchill who was in Trafalgar Square at the time, with her 11-year-old son Noah, told the Mirror: "I was in the square when the bomb went off."
