In the era of digital economy，the combination of financial industry and technology industry has made the field of financial technology flourish. As the world’s leading financial technology center，London has formed the extremely competitiveness in the market，capital，talent，government support and regulatory initiatives. This paper takes the financial technology of London as example，introduces the integration of digital economy and financial technology in London and the station of digital economic development. At last，the paper looks forward to the future development of financial technology in London from the current development of financial technology companies.