There are over 6,000 abandoned lead mines across the UK leaking hundreds of tons of metals into our rivers each year. With climate change causing an increase in flooding, contamination is likely to get worse. Is this lead ending up in our food chain, water system and blood?

Presented by Lucy Taylor and Dan Ashby Producers: Pūlama Kaufman and Kelly Windsor Burgin Researcher: Charlie West

A Bite Your Tongue production for BBC Radio 4