The foreign and Commonwealth Office of the United Kingdom has updated its travel advice for UK citizens and dual nationals traveling to Iran.
The update includes information and advice about current period of heavy rainfall and flooding across Iran.
The FCO advised all British nationals against all travel to areas within 100km of the entire Iran/Afghanistan border, those within 10km of the entire Iran/Iraq border, as well as the province of Sistan-Baluchistan and the area east of the line running from Bam to Jask, including the city of Bam.
The FCO in its update, advised British-Iranian dual nationals against all but essential travel to the rest of Iran.
The FCO warned: " There is a risk that British nationals, and a higher risk that British/Iranian dual nationals, could be arbitrarily detained in Iran. All British nationals should consider carefully the risks of traveling to Iran. The Iranian authorities don’t recognize dual nationality for Iranian citizens and therefore don’t grant consular access for FCO officials to visit them in detention. If you’re a British-Iranian dual national and are subsequently detained in Iran, the FCO’s ability to provide consular support is extremely limited."
Travelers to Iran have also been warned about the consequences of recent extreme weather across Iran and have been advised to continue to monitor local and international weather updates .
Travelers and dual nationals are also advised "to exercise caution and avoid any protests or rallies and follow the instructions of the local authorities."
Several dual nationals including some with British-Iranian nationality are in jail in Iran for reasons that have not convinced the international community and the media.
Nazanin Zaghari-Ratcliffe, a dual national, was jailed for five years in 2016 on spying charges, which she denies.
The FCO travel advice reminds travelers to Iran, "You should respect local traditions, customs, laws and religions at all times and be aware of your actions to ensure that they do not offend."