McCann PJ Files. The PJ Files in Portuguese. These are useful for checking the accuracy of statement translations. They also appear to contain a fair bit of information that has not been translated into English. http://www.mccannpjfiles.co.uk/
UK Justice Forum. A forum covering a number of issues relevant to the UK. The Madeleine McCann content is at http://miscarriageofjustice.co/index.php?board=18.0 The number of threads is large and most threads are long, but if you are happy to zip through the off-topic comments, the information is significant.