Four fire engines and around 25 firefighters were called to a fire at a range of allotment sheds.
The fire occurred in Creighton Avenue, East Finchley and the sheds were destroyed by fire.
Firefighters cooled five 25kg gas cylinders and removed them as cylinders can explode when exposed to heat.
The Brigade was called at 2.38am and the fire was under control at 5.27am.
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