Greyfriars station in Northampton , an example of 1970s brutalist architecture , was reduced to rubble in five-minute . Dilapidated building was enveloped in smoke following a six seconds warning siren and a series of loud bangs . Featured on Channel 4 Demolition show fronted by Kevin McCloud in list of 12 buildings that should be torn down . Blast watched by hundreds of locals who gathered at the scene , while hundreds more watched live-streamed event .
Greyfriars station in Northampton , an example of 1970s brutalist architecture , was reduced to rubble in six seconds . Dilapidated building was enveloped in smoke following a five-minute warning siren and a series of loud bangs . Featured on Channel 4 Demolition show fronted by Kevin McCloud in list of 12 buildings that should be torn down . Blast watched by hundreds of locals who gathered at the scene , while hundreds more watched live-streamed event .