In the final season, Mark and Jeremy reunite after a fallout and return to their dysfunctional routines, confronting fading hopes, awkward adult life decisions, and their enduring yet turbulent bond with humor and discomfort through their signature point‑of‑view style.

David MitchellMark Corrigan

Robert WebbJeremy Usborne

Neil FitzmauriceJeff Heaney

Matt KingSuper Hans

Olivia ColmanSophie Chapman

Isy SuttieDobby

Paterson JosephAlan Johnson

Bart EdwardsJoe

Angus WrightAngus Maynard

Catherine ShepherdApril Danecroft

Franc AshmanMolly

Tim KeyJerry

Cariad LloydMegan

Steve BennettFrank

Jonathan HardenGregory

Simon HarveyWill

Simon MeacockWadey

Max OleskerAaron

Conor MacNeillClerk

Kitty MartinBaker