Episode 1.1
Glossy period drama has more to do with airlines than buses, but episode 1 has a glimpse of a London Transport Routemaster, and an even briefer you-had-to-know-it-was-there role for Southern Vectis 549 (ODL9), a 1957 Bristol Lodekka LD6G/Eastern Coachworks, in red livery and pretending to be a London bus: