The European eel is now categorised as a critically endangered species, but 1000 years ago they flourished in abundance, and were an important aspect of Medieval life. In this episode, Cat is joined by Medieval historian Dr. John Wyatt Greenlee, also known to many as the ‘Surprise Eel Historian’. We examine the cultural history and significance of Eels in England. From a delicious meal to being used as a form of currency, just how vital was the presence of Eels in the Middle Ages to Britain?