New York has knocked London from its position as the world’s leading global financial center after seven years, according to the Global Financial Centers Index compiled by London-based consultancy Z/Yen. London slipped from the top of the global rankings, scoring 784 against 786 for New York, because a series of own goals had tarnished its reputation, the report said. […] Hong Kong and Singapore took third and fourth spots respectively, the same as a year ago, the survey showed. But the gap between the “Big Four” and the chasing pack, led by Zürich, Tokyo and Seoul, was narrowing, it said....