There are certain things that are quintessential British culture, like tea parties, corgis, and guards with big hats. One of the most iconic pieces of British pop culture is Doctor Who, the long-running sci-fi show that most recently helped launch the careers of Matt Smith, Karen Gillan, and James Corden before they shipped him across the pond to become a professional chauffeur. But throughout its 50+ years on air, Doctor Who has never encountered another infamous British legacy: The Beatles.