Although Cadbury's Dairy Milk is 100 years old, the Cadbury story itself is much older. John Cadbury, son of Richard Tapper Cadbury, a prominent Quaker of Birmingham, opened a shop in 1824 (he was only 22 then) at 93 Bull Street in Birmingham.

He sold home made cocoa and drinking chocolate.

Milk chocolate for eating was first made by Cadbury in 1897 by adding milk powder paste to cocoa mass, cocoa butter and sugar, but it wasn't really a big hit.

But by 1905, Cadbury launched its Dairy Milk Chocolate and the rest is history.

November 10, 1888: An advertisement for Cadbury's Cocoa, using an image of rugby players to emphasise the `Strength and Staying Power' gained by drinking the product.

Photograph: Hulton Archive/Getty Images

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