Brexit referendum

In this handout photo issued by 10 Downing Street, Britain's Prime Minister Boris Johnson speaks from 10 Downing Street praising NHS staff in a video message, after he was discharged from hospital a week after being admitted with persistent coronavirus symptoms, in London, Sunday, April 12, 2020. British Prime Minister Boris Johnson is praising the National Health Service staff for saving his life in a video on Twitter after his discharge from St. Thomas’ Hospital in London. He said he did not have the words to properly thank the staff at NHS for “saving my life.” He lauded two nurses Johnson said stood by his bedside for 48 hours “when things could have gone either way.” (Pippa Fowles/10 Downing Street via AP)

FILE - In this May 4, 2018, file photo, a man walks past a branch of HSBC bank in Hong Kong. Europe's biggest bank has reported that its net profit fell 53% in 2019 to $6 billion. London-based HSBC, whose profit is mainly from Asia, said it plans to revamp its U.S. and European business and shed $100 billion in assets to improve its profitability. (AP Photo/Kin Cheung, File)

Brexit supporters react during a rally in London, Friday, Jan. 31, 2020. The U.K. is scheduled to leave the EU at 23:00 GMT Friday, the first nation in the bloc to do so. (AP Photo/Frank Augstein)

FILE - In this file photo dated Thursday, Dec. 12, 2019, a man looks up as police and fire personnel move in to remove climate activists and their banner, after they climbed the Europa building during a demonstration outside an EU summit meeting in Brussels. Massive challenges lay ahead for the European Union in 2020, as the impact of climate change seems likely to drive the bloc's thinking and policy initiatives over the coming years, starting Wednesday Jan. 1, 2020. (AP Photo/Francisco Seco, FILE)

In this photo made available by the UK Parliament, Britain's Prime Minister Boris Johnson, center, attends the debate in the House of Commons, London, Thursday Dec. 19, 2019. Boris Johnson signaled an end to Britain’s era of Brexit deadlock Thursday, announcing a packed legislative program intended to take the U.K. out of the European Union on Jan. 31, overhaul everything from fishing to financial services and shore up the country’s cash-starved public services. (Jessica Taylor/UK Parliament via AP)

Britain's Prime Minister Boris Johnson, gestures as he speaks to supporters on a visit to meet newly elected Conservative party MP for Sedgefield, Paul Howell, at Sedgefield Cricket Club in County Durham, north east England, Saturday Dec. 14, 2019, following his Conservative party's general election victory. Johnson called on Britons to put years of bitter divisions over the country's EU membership behind them as he vowed to use his resounding election victory to finally deliver Brexit. (Lindsey Parnaby/Pool via AP)

Britain's Prime Minister Boris Johnson waves after addressing the media outside 10 Downing Street in London, Friday, Dec. 13, 2019. Johnson's Conservative Party has won a thumping majority of seats in Britain's Parliament — a decisive outcome to a Brexit-dominated election that should allow Johnson to fulfill his plan to take the U.K. out of the European Union next month.(AP Photo/Frank Augstein)

Britain's Prime Minister Boris Johnson speaks in the House of Commons in London following the debate for the EU Withdrawal Agreement Bill, Tuesday Oct. 22, 2019. British lawmakers have rejected the government’s fast-track attempt to pass its Brexit bill within days, demanding more time to scrutinize the complex legislation and throwing Prime Minister Boris Johnson’s exit timetable into chaos. (Jessica Taylor, UK Parliament via AP)

Britain's Prime Minister Boris Johnson speaks to lawmakers inside the House of Commons to update details of his new Brexit deal with EU, in London Saturday Oct. 19, 2019. At a rare weekend sitting of Parliament, Johnson implored legislators to ratify the Brexit deal he struck this week with the other 27 EU leaders. Secretary of State for Exiting the European Union, Stephen Barclay, left, and Business Secretary Andrea Leadsom, right. (Jessica Taylor/House of Commons via AP)

European Commission President Jean-Claude Juncker, left, and European Union chief Brexit negotiator Michel Barnier arrive for an EU summit in Brussels, Thursday, Oct. 17, 2019. Britain and the European Union reached a new tentative Brexit deal on Thursday, hoping to finally escape the acrimony, divisions and frustration of their three-year divorce battle. (Julien Warnand, Pool Photo via AP)