Brexit referendum

European Union chief Brexit negotiator Michel Barnier speaks during a media conference after Brexit trade talks between the EU and the UK, in Brussels, Friday, Aug. 21, 2020. (Yves Herman, Pool Photo via AP)

FILE - In this file photo dated Thursday, Jan. 30, 2020, a woman holds up the British Union and the European Union flags together during an event in Brussels, Belgium. The number of Britons moving to live in European Union countries has soared since the Brexit vote in 2016, a U.K.-German study has revealed Tuesday Aug. 4, 2020. (AP Photo/Francisco Seco, FILE)

FILE - In this file photo dated Wednesday, March 14, 2018, Russian President Vladimir Putin speaks in front of a Russian National flag in Sevastopol, Crimea. An influential committee of British lawmakers plans to publish its findings Tuesday July 21, 2020, reporting on Russian interference in British politics, amid criticism the government delayed its release for more than six months to shield Prime Minister Boris Johnson and his Conservative Party from embarrassment. (AP Photo/Alexander Zemlianichenko, FILE)

FILE - In this file photo dated Thursday, May 7, 2020, Britain's Foreign Secretary Dominic Raab arrives at 10 Downing Street, in London. Raab on Monday July 6, 2020, announced targeted economic sanctions against individuals and organizations from Russia, Saudi Arabia, Myanmar and North Korea under new U.K. powers to punish human-rights offenders.(AP Photo/Alberto Pezzali, FILE)

Britain's Prime Minister Boris Johnson, wearing a face mask, visits the headquarters of the London Ambulance Service NHS Trust in London, Monday July 13, 2020. (Ben Stansall/Pool via AP)

European Union's Brexit negotiator Michel Barnier waits for start of a meeting on further Brexit negotiations at EU headquarters in Brussels, Monday, June 29, 2020. European Union and U.K. negotiators resumed in-person talks on a post-Brexit trade deal on Monday, with both sides insisting that the process must accelerate markedly if they're to reach an agreement by the end of the year. (John Thys, Pool Photo via AP)

In this May 19, 2018 photo, Gregory Katz, acting London bureau chief for The Associated Press, stands in front of St. George's Chapel in Windsor near London, while covering the royal wedding of Prince Harry and Meghan Markle. Katz, a Pulitzer Prize winning journalist who recently led the AP's coverage of Brexit and the election of Boris Johnson as prime minister, died Monday, June 22, 2020. He had been ill in recent months and had contracted COVID-19. He was 67. (AP Photo)

European Council President Charles Michel, on screen right, speaks via videoconference to European Commission President Ursula von der Leyen, screen left, prior to EU-UK talks via videoconference at the European Council building in Brussels on Monday, June 15, 2020. EU Commission President Ursula von der Leyen, European Parliament President David Sassoli and European Council President Charles Michel held a videoconference with British Prime Minister Boris Johnson on Monday to assess the state of negotiations between both sides on a future trade agreement. (AP Photo/Francisco Seco, Pool)

European Energy Commissioner Maros Sefcovic addresses a video press conference following a meeting of the EU-UK Joint Committee on Brexit at the EU headquarters in Brussels, Friday, June 12, 2020. The British government said Friday it will delay bringing in full border checks on goods coming from the European Union to relieve pressure on businesses hammered by the coronavirus pandemic. (Kenzo Tribouillard, Pool Photo via AP)