More than 56 million Iranians are eligible to vote in Friday's presidential election. Four candidates are vying for the top job, including incumbent Hassan Rouhani and hardliner Ebrahim Raisi. A key issue for voters in Tehran is the rising inequality between the north and south of the capital. Our correspondent went to meet those on both sides of the divide, from artists concerned about having the freedom to express themselves to workers in poorer neighbourhoods trying to afford basic goods.
A programme prepared by Josh Vardey and Laura Burloux.