It's frustrating - none of the reports on this that I've seen really go into the beliefs behind what happened. We know that some "literature" on witches was found, but what exactly? Who was it by? Was it some sort of "voodoo" stuff (as can be found in a few bookshops in London), or Pentecostal demonology? Or something else again?

I've guessed that it's probably the Pentecostal type of literature. Two reasons - one, the BBC source notes that the literature concerns "sin, the devil and witchcraft", and those first two topics (especially the first one) tend to be of interest to that type of church. Secondly, London has rather a lot of that type of church, with congregations drawn from the black communities, especially more recent immigrants. See all the various stories about "http://www.prattle.net/cgi-bin/mt/mt-search.cgi?IncludeBlogs=1&search=deya">Gilbert Deya and the Victoria Climbié case for examples of this kind of church gone bad.

The Pentecostals are running rampant in my neck of the woods too. The flavour here is giant auditoriums full of happy, singing people being easily parted from their money on the promise they'll be rich. Religion is quite the money-spinner. Worse still, these loons are cosying up to the already religiously insane PMs-in-waiting and grooming them as their puppets.