:It's hard to follow all the named references now that they're sitting here on a talk page.  Do any of them actually say there was a "faction"?  The ref  makes it sound like collaborating with Murdoch was a fact of life for all British politicians, and he was a British politician, so ...  But that's not the same as being part of a faction.  To be clear - these are hard-hitting, important references that need to stay in the article.  I'd rather have bare references floating around in mid-air with no text at all than leave them out, let's put it that way.  But such an absurdity shouldn't be necessary - just give each article a bit more of its own voice, say what it says, not what you're trying to argue from it.  They have a pretty strong voice of their own already.