Britain's Prime Minister Boris Johnson and Chancellor of the Exchequer Rishi Sunak arrive for a Cabinet meeting, in London, Britain October 13, 2020. REUTERS/Simon Dawson REUTERS/Simon Dawson The UK is likely to miss the mid-2021 deadline for a UK-US trade deal set by ministers earlier this year, experts and former US officials in Washington have told Business Insider. Boris Johnson's Brexit maneuvers appear to have undermined trust in the UK government among the incoming Biden administration. Another major stumbling block in talks is the incredibly tight timeline to negotiate a trade deal from when Biden takes office on January 20 — the UK's de-facto deadline for agreeing a deal is in April. 'Can you negotiate a major free trade deal in six weeks?