Nazanin Zaghari-Ratcliffe's imprisonment for alleged spying in Iran is to be made into a television drama.

The BBC is said to be adapting the West Hampstead woman's upcoming book, A Yard of Sky: A Story of Love, Resistance and Hope, which she co-wrote with her husband Richard Ratcliffe, who campaigned for years for her release from prison.

According to Deadline, a US online publication based on the entertainment industry, the four-part drama will chronical Nazanin's arrest at Tehran airport in April 2016 as she was boarded a flight with 22-month old daughter Gabriella.

It will also portray the six-year battle to bring her home, a campaign that saw Richard lobby five foreign secretaries, stage a hunger strike outside the Foreign Office, and get involved in international hostage diplomacy negotiations.

Actors Narges Rashidi (Gangs of London, The Girlfriend Experience) and Joseph Fiennes (The Handmaid’s Tale, Shakespeare in Love) are reported to be in the title roles.

Deadline said: "Because of the story’s sensitivity, BAFTA-winning director Philippa Lowthorpe has been filming against a backdrop of strict secrecy."

Nazanin and Richard's memoir will be published in the UK this Autumn by the Penguin Random House imprint Chatto & Windus.