The singer, who is currently battling her various addictions at the Capio Nightingale clinic near Harley Street, was seen looking pale and thin as she wobbled out into the street followed by a member of staff.
Amy was apparently let out so she could apply for a visa in time for her proposed trip to the US for the Grammy Awards on 10 February. The wayward star is up for six awards including Album of the Year and Best New Artist.
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