Exercise Unified Response was a large multi-agency emergency services exercise held near London from February 29 – March 3, 2016. It is the largest emergency exercise to ever have been staged in Europe. The exercise was conducted at four sites simultaneously across central and south east London, with much of the live action taking place at Littlebrook Power Station, Dartford. The exercise scenario was centred around a building collapse onto Waterloo station during rush hour. An area of the exercise site was prepared with London Underground carriages and rubble from which simulated casualties were extracted by rescue services.