London-based, New Zealand-born ceramicist Raewyn Harrison has made the River Thames the focus of her practice. In this episode, she talks about the hobby of mud larking in which people discover all manner of everyday objects from centuries past in the Thames mud at low tide and how her own discoveries are made into ceramics, how she photographs old maps and de-commissioned installations in the Thames estuary and transfers them on to porcelain, her involvement in public projects and workshops around the Thames, her “protest” bottles, and about her latest work for the Museum of London’s mud larking exhibition.