london british finance minister philip hammond seek quell accusations within conservative party take soft approach brexit say european union represent enemy negotiations hammond come increasingly hostile fire supporters tough approach split britain eu tell sky news television time conservatives end in-fighting brexit talk understand passions high understand people strong view go place agenda say interview sideline international monetary fund meet washington enemy opponents side table people negotiate negotiate hard get best deal britain hammond say hammond infuriate pro-brexit newspapers week criticize conservatives include former finance minister nigel lawson agree spend money preparations possibility britain leave eu without deal speak media washington friday hammond decline say whether would vote brexit second referendum hammond campaign britain remain part eu ahead june 2016 vote echo prime minister theresa may reticence issue hammond decline say would vote another referendum hold referendum tell bbc know vote early week may decline answer similar question stoke concern among brexit supporters fully commit take britain eu thursday may spokeswoman say prime minister full confidence hammond uk 's hammond urge party unite brexit say eu 'the enemy