Our embassies and high commissions use a number of channels to communicate information to British nationals. These include travel advice, wardens networks, LOCATE—an online registering facility, the internet and local media.
All of our embassies and high commissions are required to hold a post emergency plan and, where deemed necessary, a civil contingency plan. Our embassy in Tehran holds both. These plans are designed to help our diplomatic missions respond to any crisis they may face, including dealing with consular emergencies, civil unrest or in some cases assisting the departure of British Nationals from a country. All plans are reviewed regularly and tested at least annually and more often if the circumstances in country warrant it. The Foreign and Commonwealth Office's Consular Crisis Group oversees the review process of these plans.