Who was the real Merlin? Dr Francis Young says the closest is John Dee, Elizabeth I's occultist advisor who gave her the idea for a British Empire. Dee believed it was her destiny to rule the New World - from his supposed conversations with angels - and that she could trace her lineage back to King Arthur. His mystical and astrological calculations influenced her decision to take on the Spanish.

So, the Philosopher's Stone, the occult and spell books aren't just in fantasy novels but very real things that have determined the decisions of those in the highest seats of power throughout Britain's history for centuries. Dan is joined by Dr Young, a historian and folklorist specialising in the history of religion and belief who takes Dan through a potted history of magic and magical advisors from the Middle Ages to the Victorians.

Dr Francis Young's book is called 'Magic in Merlin's Realm.'

Produced by James Hickmann, and Mariana Des Forges and edited by Anisha Deva.

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