Britain's Rivers Reveal a Forgotten Slavic Past?

Could Britain's oldest rivers preserve evidence of a forgotten Slavic past?

In this documentary, we examine the names of Britain's greatest rivers—including the Thames, Severn, Derwent, and Lagan—and compare them with living words preserved across modern Slavic languages. Could these similarities be coincidence, or do they point toward a much older linguistic tradition?

Rather than presenting sensational claims, this episode explores the evidence, compares competing interpretations, and asks whether Europe's oldest hydronyms deserve a fresh look.