Firefighters are currently attending a shipping container which is on fire near Willesden Junction.
London Fire Brigade (LFB) said they were called to Channel Gate Road at 3.09pm to the fire.
A spokesman said one shipping container is currently alight.
Four fire engines - from Park Royal, Willesden, North Kensington and Ealing - have been called to the scene.
It is not yet clear if there are any injuries or what the full extent of the damage is.
We will be providing updates throughout the evening on the fire.
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Fire now under control
London Fire Brigade have said the fire is now under control. Fire crews are now cooling a gas cylinder and added that the cause of the fire is unknown at this stage.
Double 4 Ltd office had 'around 20' inside when it was evacuated
A spokesman for Double 4 Ltd said there were around 20 people inside the office when it was evacuated at around 4.15pm.
Double 4 Ltd office evacuated
The office of truck repair shop, Double 4 Ltd, has been evacuated due to the fire on Channel Gate Road.