Marylebone is home to 10 of London's best tech companies, led by Fintech (3).

Retirement savings technology platform running workplace pensions and licensing its Keystone tech to providers worldwide.

UK digital bank for mass-affluent savers and borrowers, with a banking-as-a-service tech arm, Monument Technology.

Company prepaid cards and spend management software giving staff controlled spending and finance teams oversight.

Digital-first clinic offering virtual GP, mental health and extended care services to patients across Europe.

Cloud platform that connects operating rooms so surgeons can collaborate remotely and hospitals can analyse surgical video and data.

Toothfairy is a dental app that connects patients with UK-registered dentists for remote consultations, aligners and treatment plans.

Refute is an AI platform that detects coordinated online disinformation campaigns early and recommends how to respond.

Makes NightFighter radio frequency jamming and electronic warfare systems that detect and bring down hostile drones.

Supplies official sports data, betting technology and data-driven advertising to sports leagues, sportsbooks and media companies.

givestar is a fundraising platform that charities use for digital, event and contactless donations and supporter engagement.