In late June 2016, Fox announced on LBC that he intended to run for the leadership of the Conservative party once again, after David Cameron resigned following the result of the EU referendum, in which Fox supported leaving the EU. During the announcement of his candidacy, he said that the UK should trigger Article 50 by the end of 2016 so it could leave the EU by 2019, specifying 1 January 2019 as the date on which the UK should leave. He stated that he would not allow freedom of movement to be considered as part of any alternative trade arrangement with the EU.