British voters head to the polls in just four weeks to decide whether they should stay in the European Union or leave it. Prime Minister David Cameron has been actively campaigning for votes to stay in the EU. Former London Mayor Boris Johnson, who's now a member of Parliament, has been one of the leading voices on the other side.
We get an update on the campaign for and against ahead of the June 23 vote from the BBC's Rob Watson in London.
- Rob Watson, UK political correspondent for the BBC. He tweets @robwatsonbbc.
This segment aired on May 30, 2016.