The EU imposed tough sanctions against Iran last month, which included a freeze of the country's central bank assets and an oil embargo set to begin in July. Iran's Oil Minister Rostam Qassemi had warned earlier this month that Tehran could cut off oil exports to "hostile" European nations. The 27-nation EU accounts for about 18 percent of Iran's oil exports.
"Crude oil exports to British and French companies have been halted," Oil Ministry spokesman Ali Reza Nikzad-Rahbar said on the ministry's shana.ir website. "We have our own customers and have no problem to sell and export our crude oil to new customers."
Britain's Foreign Office declined comment, and there was no immediate response from French officials.