British Iranian national Nazanin Zaghari-Ratcliffe was on Monday sentenced to an additional year in prison for spreading propaganda against the system .
Zaghari-Ratcliffe has already served a five-year prison sentence in Iran for spying, charges her family and employer, the Thomson Reuters Foundation, has always denied.
Her lawyer Hojjat Kermani said her second charge was over her 2009 participation in a protest in front of the Iranian embassy in London. She faces a one-year ban on leaving the country.
Her husband, Richard Ratcliffe, has told the BBC they will appeal.
British Foreign Secretary Dominic Raab wrote on Twitter that this is a totally inhumane and wholly unjustified decision.
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Dominic Raab announced the measures on Monday Credit: PA
The British government has sanctioned 22 people from around the globe who have links to some of the world s most notorious corruption cases, Foreign Secretary Dominic Raab has announced.
Individuals from Russia, South Africa, Saudi Arabia, Honduras and others were targeted with asset freezes and travel bans on Monday in the first wave of sanctions under the measure.
Fourteen of those hit with sanctions were involved in one of the largest tax frauds in recent Russian history as exposed by the late lawyer Sergei Magnitsky.
Taken partly in tandem with measures in the US, Mr Raab said the sanctions target those involved in some of the most notorious corruption cases around the world .