The London Fire Brigade was alerted to the emergency in Romford Road after a taxi driver reported seeing smoke at around 5.38am on August 23.
Four fire engines and 25 firefighters were dispatched to the scene from stations across Stratford, East Ham and Ilford.
The blaze was brought under control by 6.36am after the ground floor of the shop was destroyed.
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Two people from the flat above were evacuated prior to the arrival of the emergency services.
The cause of the fire is understood to have been accidental and due to a capacitor failure within a freezer.
There were no injuries reported.
