The Mayor of London is calling for the immediate release of Nazanin Zaghari-Ratcliffe, who has been imprisoned in Iran for over two years.

The British-Iranian, who turns 40 on Boxing Day, was jailed for five years in 2016 after being convicted of spying, which she denies.

Mayor of London Sadiq Khan met Ms Zaghari-Ratcliffe’s husband Richard Ratcliffe to discuss her case and offered his support.

Now Mr Khan and Mr Ratcliffe have come together to urge Iranian authorities to release her from prison and reunite her with her family at Christmas.

They called her imprisonment a “travesty of justice” and said the charges against her were “completely false”.

The pair said: “She is innocent and should not be kept in prison, separated for so long from her family and her young daughter. While she’s imprisoned, Nazanin continues to suffer both physically and mentally.

“Her case, and also those of other dual-nationality prisoners being wrongly held in Iran, have rightly attracted global interest and deep concern.

“We are grateful to the Foreign Secretary for prioritising her case and trying to secure her release. We are also grateful to Nazanin’s local MP, Tulip Siddiq, who has tirelessly campaigned for her constituent’s release.”

Mr Khan and Mr Ratcliffe also called on the Government to fight “relentlessly” for other British citizens imprisoned in Iran.