A BBC team has spent months getting under the bonnet of a rapidly growing migrant route. Almost overnight Vietnam has become the largest single source of migrants making the dangerous channel crossing to reach the UK. Speaking to one man who has been involved in the criminal network for decades, we uncover a world of forged documents, premium services and shattered dreams. Lucy Hockings speaks to the BBC’s Paris Correspondent, Andrew Harding and our reporter in Bangkok, Thu Bui. The Global Story brings you trusted insights from BBC journalists worldwide. We want your ideas, stories and experiences to help us understand and tell #TheGlobalStory. Email us at [email protected] You can also message us or leave a voice note via WhatsApp on +44 330 123 9480. Producers: Richard Moran and Mariana Hernández Carrillo Sound engineer: Michael Regaard Assistant editor: Sergi Forcada Freixas Senior news editor: Sara Wadeson