Cadbury is opening its 'treasure trove' archives for one day only.

Visitors will be able to step inside the archives at Mondelez International as part of Birmingham Heritage Week .

There are nearly 50,000 Cadbury items to discover, including 'some of the rarest artefacts in the world'.

What's more, it's free to visit.

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Taking place on Saturday September 13, this forms part of a special Bournville Heritage Open Day packed full of events in the Brum's chocolate box suburb.

A spokesman for Birmingham Heritage Week said: "The Cadbury Archives are a rich treasure trove of material relating to the history of the Cadbury business. The Archives contain documents dating back to 1842 and extensive packaging and advertising collec

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