Speaking to the Islington Gazzette, Umit Bakir, who works for a minicab company said:
I looked outside and I could see the fire coming up from underground. Then the fire brigade came and closed the road. My business was far enough away, but if I had been at Iceland I would have been a bit worried.
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The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.
The rally comes after it emerged that the Home Office destroyed thousands of landing cards documenting the arrival of windrush-era migrants