Apple has orchestrated a symbolic changing of the guard in the UK as new comScore data gave it the lead in the country. A 46 percent spike in ownership over the past year made the iPhone the single largest smartphone platform in the country as of this past May, with about 5.5 million users. Symbian's user base dropped 10 percent over the same space of time and left it with about 4.5 million predominantly Nokia-based users.