FILE – In this file photo dated Monday, Oct. 7, 2019, United Kingdom’s Brexit advisor David Frost arrives at EU headquarters for a technical meeting on Brexit, in Brussels. Britain’s chief Brexit negotiator Frost is quoted in a newspaper Sunday Sept. 6, 2020, saying Britain wants “to get back the powers to control our borders and that is the most important thing”, as he talks tough ahead of crucial Brexit trade talks, saying the U.K. was “not afraid to walk away.”