Britain’s Foreign Office has eased its travel advisory on visits to Iran.
The new advisory issued on July 25 no longer urges British citizens to avoid all nonessential travel to the country.
However, it calls on Britons to avoid traveling to border areas close to Iraq, Pakistan, and Afghanistan.
Foreign Secretary Philip Hammond said there had been "decreasing hostility” toward Britons under Iranian President Hassan Rohani's government.
The British Embassy in Tehran remains closed after it was attacked by protesters in 2011.
The easing follows announcement of an agreement between Iran and world powers regarding Tehran’s nuclear program.
Under the deal agreed in Vienna on July 14, sanctions that have hampered Iran’s economy will be gradually removed in return for Tehran accepting long-term curbs on its nuclear program.