© Licensed to London News Pictures. 10/12/2020. London, UK. Prime Minister Boris Johnson leaves 10 Downing Street to greet Crown Prince of the Emirate of Abu Dhabi Sheikh Muhammad bin Zayed Al Nahyan. Prime Minister Boris Johnson and President of the European Commission Ursula von der Leyen have agreed to a further 72 hours of talks in a final effort to reach a Brexit trade and security agreement. Photo credit: Rob Pinney/LNP