The British-Iranian dual national was arrested in 2016 in Tehran and imprisoned after being convicted of unspecified “national security-related” crimes. The trumped-up charges, which linked to her work at the BBC World Service Trust and Thomson Reuters Foundation, are believed to have been in direct response to a historical £400 million debt owed by the UK government to Iran, which has now been paid after years of complex negotiations.

Last week, the MP for Hampstead and Kilburn, Tulip Siddiq, told the Guardian that it would take time for Zaghari-Ratcliffe to adjust to life in the UK after the trauma of what happened.

“Richard and Gabriella have both changed a lot in the last six years, and they want to get to know each other again and make up for lost time. She said she was going to stay low for a bit, but I am hoping that in time we will be able to host her in parliament to celebrate her freedom and the frankly inspiring work of her husband, Richard, and his family in campaigning for her release.”

At present, the family are staying in a safe house before they return home to north London.

The documentary is expected to air later this year on Channel 4.

Nazanin: a new Channel 4 documentary will tell the story of the fight to free Nazanin Zaghari-Ratcliffe