Northampton lead Prem charge but history shows title defence will be no simple task | Robert Kitson

Boosted by retaining Henry Pollock, champions are eager to keep improving but a revitalised Saracens and Exeter should push them all the way It used to be simple. Win the Prem once and people would assume it was just the beginning. At various times no one could dethrone Bath, Leicester or Saracens, serial winners by fa