London and New York have been battling for the title of the worldwide monetary community for quite a long time. Both have solid cases. The competition between the two is becoamongst the most favored destinations of financial technologies.
There are advantages of both the locations, however the influence of the british territories remains on the financial world.
Recently, few articles were published on the regulatory portal comparing both the cities. It is worth reading fintech centercomparison
I believe newyork is a better center of fintech