Winnie Blagden's 16,000 birthday cards go on show

An exhibition featuring 16,000 birthday cards sent to a Sheffield woman to celebrate her centenary has begun at the city's Winter Garden.

Winnie Blagden received cards from the Queen, Prime Minister David Cameron and Hollywood actor Dustin Hoffman after an internet appeal went viral.

The campaign was launched by BBC Radio Sheffield after learning the 100-year-old had no surviving friends and family.