This briefing looks in detail at the Withdrawal Agreement negotiated between the EU and UK and finalised on 14 November 2018. It was endorsed by EU Member State leaders at a special European Council summit on 25 November and the UK Prime Minister promoted it in the UK Parliament and around the country. The Agreement was debated at length in Parliament on several occasions and has been voted on three times. But the House of Commons has not endorsed it. A second extension of Article 50 took exit day to 31 October 2019, but once again the UK is faced with the possibility of leaving the EU without an agreement if this agreement or another one is not ratified by the UK and the EU.