And so the bun fight begins. Liam Fox is attacking the “metropolitan elites” that run the party. Sources close to a Boris say it’s a “struggle to respect” Dave, something we all knew. It’s fallen to another former leadership opponent to try calm things down. David Davis told Paul Waugh: “Writing letters is daft. We are in the middle of a national crisis in economic terms. It is not a time for introspection.”  That didn’t stop him ringing the UKIP alarm bells though. The Prime Minister has days of this ahead…