Of all the sectors where digital is having an impact, financial technology or "fintech" has been one of the biggest growers in recent years. Here are some of the finest fintech startups currently in the business.

1. TransferWise

No list of the hottest fintech startups would be complete without TransferWise, which recently attracted over $58 million in a new round of funding, attracting investment from Andreessen-Horowitz, Richard Branson and Valar Ventures. Its innovative service bypasses banks through direct peer-to-peer transfers, avoiding hidden fees. Founded by Taavet Hinrikus and Kristo Käärmann, TransferWise claims to offer faster international money transfers and savings of up to 90 percent compared to bank services.

2. Cytora

The first start-up to be funded and supported by the University of Cambridge, Cytora provides banks and other organisations with real-time data about geopolitical risks such as invasions or insurrections. Its detection technology is deployed against the contents of the entire web to monitor events as they unfold and provide updates. The web-based programme was recently selected to participate in Accenture’s FinTech Innovation Lab London.

3. Invoiceable

This app gamely tackles the relatively unglamorous but admittedly vital world of invoicing. Yes, it would be a stretch to call it the Tinder of the FinTech world, but its target audience will find much to get excited about in this free platform. Invoiceable increases convenience for businesses by allowing users to manage and send professional-quality invoices in a small amount of time.

4. Osper

Founded by Alick Varma, an alumnus of Spotify and Mendeley, this startup opts for a family focus, aiming to educate children about saving money and effectively running their finances. Osper is a prepaid Debit Card for under-18s to get to grips with controlling their purchases. It comes with a mobile banking app so that the young users and their parents can keep track of expenditure.

5. Atsora

Another participant in the Fintech Innovation Lab London, the Polish startup provides tools to financial services companies to help them communicate better with SME customers. Its Momentum software bridges the gap between SME and bank, helping with the planning of business models and monitoring cash flow in and out. Users can share selected information with their bank to get bespoke offers and real-time support.