Health and safety investigators entered a flat above the shop to take photographs of the sign, which was made of metal and measured approximately 30ft.
A bunch of flowers had been left at the scene by a member of the public.
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A humid night for some with thundery downpours in places.
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Daniel Cowell has been jailed for five years and four months after ramming a police patrol car with a stolen transit van.