Four Londoners are inseparably linked by their wartime experiences. In a time when the barriers of sexuality and social convention have been broken down, they enjoy a freedom never experienced before.

Anna Maxwell Martin
as Kay Langrish

Claire Foy
as Helen Giniver

Jodie Whittaker
as Vivian Pearce

Anna Wilson-Jones
as Julia Standing

Harry Treadaway
as Duncan Pearce

JJ Feild
as Robert Fraser

Liam Garrigan
as Reggie Nigri

Claudie Blakley
as Nancy Carmichael

Kenneth Cranham
as Horace Mundy

Jenna Augen
as Iris Knight