(FILES) In this file photo taken on October 22, 2019 EU and Union flags belonging to both anti-Brexit and pro-Brexit activists, fly outside the Houses of Parliament in London on October 22, 2019, as MPs begin debating the second reading of the Government's European Union (Withdrawal Agreement) Bill. - Prime Minister Boris Johnson was set to head to Brussels on December 9, 2020, with hopes for a post-Brexit trade deal hanging on crisis talks with EU chief Ursula von der Leyen. Johnson's dash back to the city where he made his name as an EU-bashing newspaper reporter marks the last chance of a breakthrough before Britain leaves the EU single market. (Photo by Tolga AKMEN / AFP)