Top Tech Startups in London, United Kingdom in 2026

JustPark is The Parking App leading a £50bn industry into the digital age. Parking has been difficult for too long, and we’re on a mission to make it easy. Today, we enable over 1.5 million drivers to enjoy easy parking - and also help over 20,000 property owners to manage their parking assets more effectively. Our 5-star apps help drivers find parking in seconds, with 1.4 million spaces to choose from - providing real-time information on price, availability and restrictions. You can even reserve and pay for a guaranteed space at 20,000+ locations, and extend your time in a couple of taps of the app - giving you total peace of mind. On the flip side, our award-winning car park technology unlocks underutliised space for drivers and helps property owners to maximise their revenue. From driveways to offices; hotels to hospitals; council-owned to commercially-run car parks - we offer industry-leading, data-driven solutions, trusted by Marriott, Hilton, JLL, BT, Savills and many more.

Humaans is the fastest way to onboard and manage your staff. It turns complex processes like employee onboarding, offboarding, and compensation management into simple workflows by integrating with other point solutions, such as Gsuite, Slack, Docusign, and Greenhouse. We're building a new kind of employee management system designed to help People Ops, Finance, and IT teams operate collaboratively by using the best in class point solutions they want for their staff while maintaining a central record of employee data. How do we get there? By focusing relentlessly around customers’ needs and their experience, and prioritising design, quality and performance.

SimilarWeb is the pioneer of digital market intelligence, and the standard for understanding the digital world. Our platform provides customers with granular insights about every website and mobile app enabling visibility into digital behavior and letting businesses see what is actually happening with their competitors, their industry and throughout the digital world. We have thousands of paying customers worldwide and millions of users using our free platform every month. Our customers are some of the largest global brands in the world and including Walmart, AirBnb, adidas, DHL and eBay. SimilarWeb raised over $112 million and has over 400 employees in 8 offices around the world in NY, SF, London, Tel Aviv, Tokyo, Kiev, Paris, San Paulo. With the insights and the data we provide businesses, agencies, marketers and analysts can benchmark performance against competitors, reveal competitors online strategy, discover new opportunities, identify emerging trends and understand consumer

Constructor.io is the only search and product discovery platform tailor-made for enterprise eCommerce where conversions matter. Constructor's cloud-based solutions use natural language processing, machine learning-enhanced results ranking, and collaborative personalization to deliver powerful user experiences across all facets of product discovery -- from search to browse, recommendations, and autosuggest. We optimize revenue before relevance. This has allowed us to generate consistent $10M+ lifts for our customers, which include some of the biggest brands in retail like Sephora, Backcountry, Tommy John, Lego and Bonobos. Constructor is a U.S.-based company that was founded in 2015 by Eli Finkelshteyn and Dan McCormick.

We eliminate tens of thousands in upfront data expenses, while giving you the instant flexibility to pick up real-time full exchange feeds or terabytes of historical data when you need it. Whether you're a Fortune 500 bank or a single-person startup, we scale with your budget and needs to deliver the same cutting edge performance and data integrity. For more info, visit databento.com

Trying to manually track crypto taxes gets complicated fast. TaxBit's tax engine supports transactions between any crypto or fiat currency in the world. TaxBit automatically calculates your cost basis, gains or losses, and subsequent taxes of every trade in real-time, giving you total insight into the tax impact of your trades.

Pallet is building AI Agents to transform logistics — a $12 trillion global industry. We’ve raised $50M from top investors including General Catalyst, Bessemer Venture Partners, and Bain Capital Ventures. In under two years, we’ve achieved 700% revenue growth and are just getting started. Our mission is to increase the efficiency of the global supply chain by automating the manual workflows that slow logistics teams down — from scheduling and appointment setting to data entry and load management. Our flagship platform provides end-to-end visibility, control, and optimization, while our newest product, CoPallet, introduces AI Agents that can understand and execute requests in real time, and integrate directly with customer systems. As logistics providers look to generative AI to drive efficiency, many are turning to Pallet to lead the way. With deep industry expertise and cutting-edge AI capabilities, we’re positioned to build the next $10B company in logistics. Join us and work alongside leaders from Google, DoorDash, YC, and more to shape the future of logistics tech.

Softr is the easiest way to build custom apps and portals from Airtable, in minutes. #nocode required. With Softr, you can build client portals, internal tools, marketplaces, online communities, resource directories, websites and more. Our mission is to democratize the engineering genius. Start for free - softr.io

Plum is powered by automation, and acts like an autopilot for your money. You sit at the controls, with smart spending analytics and budgeting tools to help you set your financial destination. Plum gets you there safely, so you don’t need to remember things like setting money aside, getting the best deal on household bills. Plum’s making your savings and investments work for you.. Our Mission: We’ve Imagined a world where people effortlessly manage their money without having to worry, or even think about it. A world where our users’ money has a brain that’s configured to automatically reach what is important to them. ...And here at Plum, we made it our mission to build that world... and we’re now ready to make it a reality for Plumsters. We welcome them to our reality! Where their money works for them, and their entire financial journey is easier by an autopilot, controlled by them.

Contentful, the leading content platform for digital-first business, helps over 30% of the Fortune 500 and thousands of brands around the world create and manage digital experiences for their customers across any channel. It enables greater speed and scale than traditional CMS solutions. Contentful unifies content in a single hub, structures it for use in any digital channel, and integrates seamlessly with hundreds of other tools through open APIs. Companies such as Gucci, Plaid, Goodrx, Intercom, Notion, Staples and many others rely on Contentful’s platform. For more information, visit contentful.com.