The Fremantle-owned company also produces the BBCs Martin Freeman seriesThe Responder.

Ratcliffes protests culminated in a 21-day hunger strike that ended in November 2021.

Five months later, Zaghari-Ratcliffe returned home, with her plight dominating the national news agenda.

Nazanin Zaghari-Ratcliffe

Nazanin Zaghari-RatcliffeGetty

Freedom is sweet, its amazing, but its not easy, Zaghari-Ratcliffe told Radio 4sWomans Hour.

A Yard of Skywill be published by Penguin Random Houses Chatto & Windus imprint.

Hannah Fry