Tech entrepreneurs work at the Rise London accelerator in London.

London has a lot to offer to financial technology firms despite the uncertainties hanging over Brexit negotiations, the economic secretary of the UK Treasury told CNBC on Wednesday.

Simon Kirby, who is in Singapore to attend a fintech festival, said the UK's geographical location made it possible to conduct business with Asia in the morning and the United States in the afternoon. Its independent legal system and a fair and effective regulatory system made London stand out as the leading fintech hub in the world, he added.