A doctor is being sued for libel because of comments he wrote in a newspaper about the British Chiropractic Association (in particular their alleged promotion of the use of chiropractic for asthma).  Since the case may have far-reaching consequences for journals and publishers, you might like to look at the campaign website which calls for a reform to the British libel laws to ensure they are not used to suppress scientific debate.

http://www.senseaboutscience.org.uk/index.php/site/project/333/