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A 223-year-old diary of one of the founders of Royal Worcester porcelain reveals how he stole the secrets for the world famous brand - by spying on French potters.
The remarkable log was kept by John Flight, who ran the factory with his brother Joseph during the late 18th Century.
He kept the journals, handwritten in a tiny, elaborate script, from at least 1785 until his untimely death aged just 25 in 1791.