The European Union (EU) adopted the “Batteries Directive” (91/157/EC) in March 1991. This introduced restrictions on the use of mercury in most batteries and encouraged collection and recycling. However, the objectives of this Directive have not been achieved as most portable batteries are still being sent to landfill.
As a result, the EU has introduced a new directive (2006/66/EC) that will come into force on 26 September 2008, and repeal the existing directive on the same day.
For more information:
http://uk.farnell.com/images/en_UK/pdf/batteries_new_directive.pdf
Directive Decoder