Britain's Foreign Secretary Philip Hammond leaves a Royal Air Force airplane after arriving at Mehrabad Airport in Tehran, Iran August 23, 2015. [Photo/Agencies]

TEHRAN - Britain offcially reopened its embassy in Iran's capital of Tehran after four years of closure.

The reopening ceremony was conducted by British Foreign Secretary Philip Hammond who arrived in Tehran on Sunday.

Hammond will also hold a meeting with Iran's Foreign Minister Mohammad-Javad Zarif to be followed with a joint press conference.

During his two-day stay in Tehran, Hammond is scheduled to meet with Iran's other senior officials, including Iranian President Hassan Rouhani, local media reported.

Concurrent with the reopening of the British embassy on Sunday,

Iran will also reopen its embassy in London.

On Saturday, Iranian Deputy Foreign Minister for the European and U.S. affairs Majid Takht-e-Ravanchi said that Tehran and London would keep the relationship at the level of charge daffaires, according to Press TV.

In November 2011, a group of angry Iranian students stormed the British embassy in Tehran over Britain's nuclear-related sanctions against the country. Britain shut down its embassy in Tehran and asked Iran to close its embassy in London.

In July, Iran and the world powers reached a historical agreement to end the decade-long standoff over Iran's nuclear issue.

The accord will put restrictions on Iran's nuclear activities to alleviate world's concerns in return for the removal of international and western sanctions on the country.