Victoria Climbie in the London Borough of Haringey is the most famous case of abuse that I can think of the guardian newspaper has an extensive archive of online articles
http://observer.guardian.co.uk/focus/story/0,, 1859318,00.html
If you scroll down the end you'll find links to several sites including the one set up to deal with the enquiry into her death & if you type her name into the search engine it will bring up the other articles
Adam, the young African boy found in the Thames who was used in voodoo ceremonies
http://en.wikipedia.org/wiki/Torso_in_the_Tham es
If you type 'torso in the thames' or 'adam + voodoo + thames' into the Guardian search engine it will pull the relevant articles