Subscribe to Channel 4 News: http://bit.ly/1sF6pOJ
After fears it was causing mental health problems, khat was outlawed back in June. Our reporter Jamal Osman – has been given access to police efforts to enforce the ban.
Sign up for Snowmail, your daily preview of what is on Channel 4 News, sent straight to your inbox, here: http://mailing.channel4.com/public/snowmail/remotebox.jsp
Missed Channel 4 News? Catch up on the last seven days here: http://www.channel4.com/news/catch-up/
Channel 4 News weather forecast, with Liam Dutton: http://www.channel4.com/weather/
All the latest blog posts from the Channel 4 News on-screen talent: http://blogs.channel4.com/news/