Up to 1,000 emergency service personnel and security staff descended on London’s Canary Wharf on Sunday for the largest counter-terrorism training exercise in modern times.
Codenamed 'Firebird', the drill tested responders – including police, firefighters, paramedics, and counter-terrorism investigation teams – against a simulated marauding terrorist attack. Dozens of actors helped create the scenario, which incorporated lessons from the Manchester Arena attack and utilised new technology such as drones.