After posting the note here about the 'Conservative RP' article I left a very critical note on the Talk page of the WP article. Looking at it again just now, I find that someone has diligently gone through the offending article in the last few hours and done a thorough job of removing the mistakes. So unless you are prepared to track back through recent changes on WP, you'll have to take my word for it that the previous version was pretty dreadful!
A blog that discusses problems in Wikipedia's coverage of Phonetics
Emeritus Professor of Phonetics