Recurring Guest Characters Dr. Hannah Fry 4 guest appearances Narrator 4 guest appearances Michael Mosley 3 guest appearances Dr. Xand van Tulleken 2 guest appearances Dr. Chris van Tulleken 2 guest appearances Narrator 2 guest appearances Tim Peake 1 guest appearances Adam Pearson 1 guest appearances Neil Pearson 1 guest appearances Jimmy Carr 1 guest appearances Sophie Scott 1 guest appearances Robin Dunbar 1 guest appearances Peter McGraw 1 guest appearances Alice Roberts 1 guest appearances Presenter 1 guest appearances Ella Mills 1 guest appearances Jasmine Hemsley 1 guest appearances Melissa Hemsley 1 guest appearances Natasha Corrett 1 guest appearances Narrator 1 guest appearances ⇤ « 1 2 » ⇥