Cannabis arrests drop 46% since 2010 - police figures
4 April 2016 Last updated at 09:25 BST
Arrests for cannabis possession in England and Wales have dropped by 46% since 2010, figures obtained by BBC Breakfast suggest.
The reason is thought to be many police forces are deciding it is no longer worth pursuing cannabis possession as a crime.
Last summer Durham Constabulary said it would no longer target cannabis users.
The BBC's Tim Muffett has been to see what impact that decision has had.