U.S. President Barack Obama said in an interview with BBC that it could take 10 years to reach a trade deal with the U.S. if Britain would leave the European Union (EU).

"It could be five years from now, 10 years from now before we're actually able to get something done," he said.

Obama noted that Britain would not reach a trade deal with the U.S. faster that the EU. He added that the EU was the largest trading partner of the U.S.