Prime Minister David Cameron has told EU leaders they should consider reforming rules on freedom of movement, a Downing Street source said, after Britain voted to leave the bloc.

Speaking on condition of anonymity, the source said Cameron told a leaders' dinner in Brussels yesterday that Britain and the EU should "have as close an economic relationship as possible and that the key to staying close is really to look at reform to free movement".

A British government source speaking anonymously added that Cameron believed free movement was "one of the driving factors in people voting to leave".