A file photo of an unidentified man smoking a cannabis cigarette at a house in London

An unidentified man smokes a cannabis cigarette at a house in London in this January 24, 2004 file photograph. Cannabis will be raised to a class B drug with a maximum five-year jail term for users, the government said on May 7, 2008, rejecting a recommendation from its own drugs advisers to leave the classification unchanged. REUTERS/David Bebber/Files (BRITAIN)