Is Brexit definitely going to happen?

On 29 March 2019 Britain will officially leave the European Union. It's a historic moment, no country has ever left the EU before. But some campaigners believe it's not too late to stop Brexit from happening. Are they right? And how would it work anyway? The Guardian's political correspondent Jessica Elgot explores whether Brexit is in fact inevitable Subscribe to The Guardian on YouTube ► http://is.gd/subscribeguardian Other videos in the series: Why forcing cyclists to wear helmets will not save lives ► https://www.theguardian.com/lifeandstyle/video/2018/may/31/why-forcing-cyclists-to-wear-helmets-will-not-save-lives-video-explainer Unfit for office? How the 25th amendment could remove Trump ► https://www.theguardian.com/us-news/video/2018/apr/23/unfit-for-office-how-the-25th-amendment-could-remove-trump-video-explainer After you: the psychology of queues and how to beat them - video explainer ► https://www.theguardian.com/science/video/2018/jul/04/after-you-the-psychology-of-queues-and-how-to-beat-them-video-explainer From hip-hop to Carrie Bradshaw: what's in a nameplate necklace?► https://www.theguardian.com/film/video/2018/aug/02/carrie-necklace-bradshaw-hip-hop-sex-and-the-city-nameplate-video-explainer Support the Guardian ► https://theguardian.com/supportus Sign up for the Guardian documentaries newsletter ► https://www.theguardian.com/info/2016/sep/02/sign-up-for-the-guardian-documentaries-update The Guardian ► https://www.theguardian.com Playlists: Guardian documentaries ► http://bit.ly/GDNdocs Guardian VR ► http://bit.ly/GDNVR Guardian Features ► http://bit.ly/GDNfeatures Anywhere but Westminster ► http://bit.ly/ABWseries Anywhere but Washington ► http://bit.ly/ABWUSseries Owen Jones meets ► http://bit.ly/CorbynJones Guardian Animations & Explanations ►http://is.gd/explainers The Guardian YouTube network: Guardian News ► http://is.gd/guardianwires Owen Jones talks ► http://bit.ly/subsowenjones Guardian Football ► http://is.gd/guardianfootball Guardian Science and Tech ► http://is.gd/guardiantech Guardian Sport ► http://bit.ly/GDNsport Guardian Culture ► http://is.gd/guardianculture