HMG remains extremely concerned about all dual British nationals detained in Iran, including Nazanin Zaghari-Ratcliffe and Anoosheh Ashoori. Iran does not recognise dual nationality and therefore does not the permit UK Government access to British-Iranian detainees. We continue to urge the Iranian Government immediately to release all dual British nationals arbitrarily detained in Iran to enable them to return to their families in the UK. The welfare of British-Iranian citizens in Iran is of paramount importance, and we call on Iran to uphold its commitments under international law to treat all detainees in line with international standards. We continue to raise all our dual British nationals' cases at the most senior levels, and discuss it at every opportunity with our Iranian counterparts. The Foreign Secretary has done so repeatedly with Foreign Minister Zarif. We raised their cases again when we summoned the Iranian Ambassador on 29 October, and our Ambassador in Tehran consistently raises all our dual national detainees with the Iranian Ministry of Foreign Affairs.