Britain relaxed its travel advice to Iran in 2015. After a deal with Iran. It was approved for travel. Nazanin, being a dual national of Britain and Iran, then took her daughter to visit her parents in Tehran. She was detained. Falsely. And then used by Iran.
After that happened, Britain then put travel advice restrictions back in place.
Britain didn’t have to pay anything that it didn’t owe. It was a legitimate debt that we admitted to but refused to pay.
Her case is not the same as this.
oh, and don’t forget that Boris Johnson made it worse. He stood up in parliament and, when asked about Nazanin, he said she was completely innocent and was just there to teach (one of the things Iran had accused her of) when she absolutely wasn’t. Boris had to apologise for his error later, because he was completely wrong, but Iran used that as a confession on her behalf and said she trying to teach and stir up a rebellion against their government.
So really, these cases are not the same.