Nazanin Zaghari-Ratcliffe
The mother-of-one's local MP said a British negotiating team is in Iran - six years after she was jailed.
Richard Ratcliffe, husband of the detained British-Iranian, says he was left with “no hope” after the 19th day of his hunger strike.
Foreign secretary says treatment of mother by Middle East state now amounts to “torture”.
The British-Iranian mother-of-one appeared in court on Sunday.
In a phone call with Iran's president Hassan Rouhani, the prime minister asked for the release of other detained British-Iranian nationals.
Jailed British-Iranian mother is enjoying her first taste of freedom in five years – though she has been summoned back to court.
Her husband Richard Ratcliffe has called the British government's response "disastrous".
The British-Iranian woman has been imprisoned in Tehran since 2016.
The British-Iranian mother has been in jail in Tehran since 2016.
Since a secret trial in 2016, Nazanin has been kept in a notorious prison under inhumane conditions, writes Eva Sanchis.