Green Party - UK - ended in 1990.
Free Party - UK - ended in 2002.
Liberal Party - UK - ended in 1988.
UK Unionist Party ended in 2008.
New Party - UK - ended in 1932.
Green Party of the Netherlands ended in 1994.
Green Party of Quebec ended in 1998.
National Socialist Party - UK - ended in 1941.
The cast of UK Green Party Election Broadcast - 2004 includes: Mark Forrester as Mad Driver
Yukon Green Party was created on 2011-02-28.
Bethnal Green North East - UK Parliament constituency - ended in 1950.
The Green Party Drugs Group has proposed decriminalisation of cannabis in the United Kingdom. Please see the related links section of this answer for more information on their drugs policy.
Elizabeth May is currently the federal leader. Each province and territory would have their own leader of the provincial wing.