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Following the London Fire Brigade with unprecedented access, as they respond to a whole range of emergencies.

In this second episode, one hundred firefighters are mobilised to a massive fire at a garden centre near Heathrow Airport. Things take a dramatic turn when it’s discovered there is a large quantity of highly explosive gas canisters on site, directly in the path of the spreading fire. And things go from bad to worse as the brigade realise they don’t have enough water to keep the canisters cool and fight the fire...