Top B2B Startups in London, United Kingdom

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.

One platform. One API. All Channels - from Pure-Play Webstore to Omnichannel infrastructure.

**Metaview** AI co-pilots will fundamentally rewire how work gets done. More flow-state, less toil. More insight, less guesswork. Human-centric, not process-centric. Metaview is building the AI co-pilot for hiring. At the moment, hiring is tedious, inefficient, and unreliable. But not for long. Metaview will handle the busywork, accelerate the workflows, and act as the thought partner for hiring the right candidate, quickly. We’ll make hiring feel like the high-leverage activity it is. Metaview is a startup founded by Siadhal and Shahriar after their experiences building products and teams at Uber and Palantir, and is backed by phenomenal investors in the US and Europe. Our starting point on this mission is an AI-powered note taker that gives interviewers superpowers: beautifully structured and summarized interview notes, pre-filled candidate feedback forms, and rich candidate write-ups generated in just a few clicks (if that). We’re already seeing that Metaview is becoming the center-of-gravity for the hiring process at customers like Brex, Robinhood, Genentech, and hundreds more. **The team** * We own our work from end-to-end. We work “towards goals”, not “on tasks”. We’re a team that knows the satisfaction of doing great work is only felt when it impacts the customer. * We optimize for rate-of-learning. We treat learning as the highest-form of currency for delivering future impact, and act accordingly: we run experiments, question thoroughly, and talk to customers over-and-over. We covet earned secrets. * We’re direct and actively-transparent in how we communicate and share progress. There’s no point painstakingly hiring a world-class team, if they are then uninformed or unaware of the context that matters. We’re a hybrid team with a HQ in London, UK.

Klue is an AI-powered Competitive Enablement and Win-Loss Analysis platform. We enable enterprise sales teams to win more business by providing dynamic insights about competitors. The platform uniquely brings together external competitive intel and internal knowledge from your team in the field. Then, makes it easy for Sales to access the information wherever they are. Built by product marketers to give organizations the advantage in every competitive environment. We obsess about your competition so you don't have to. We’ve have raised $62M in Series B funding, led by Tiger Global and Salesforce Ventures. Our team is based in our 4 Hubs; Vancouver, Toronto, London, UK + Amsterdam.

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.

Backed by Macquarie Group, Battery Ventures, Canaan Partners & ITOCHU, JOOR is a Series D start-up that provides the world's most recognized brands and retailers with a digital wholesale management platform that transforms the way these businesses work. With a CEO recently named a Glossy 50 “Changemaker in the Fashion Industry” and a CTO from Google, JOOR is attracting top talent to drive market dominance. We have 180 employees in 11 global offices, including NYC, Philadelphia, LA, Milan, London, Paris, Madrid, Berlin, Melbourne, Tokyo and Shanghai. And, we are continuing to grow in a smart, sound way. Founded in 2010, JOOR now services more than 12,500 brands and over 325,000 retailers in 144 countries, processing an incredible $1.5B in wholesale transaction volume each and every month. JOOR’s exclusive partners range from established luxury conglomerates such as LVMH, Kering, Richemont and Capri, to leading brands such as Stella McCartney, Valentino, Kate Spade, Tory Burch and Dr. Martens. Premier department stores including Neiman Marcus, Printemps and Harrods, as well as global digital retailers such as Shopbop and Revolve, conduct their buying exclusively through JOOR. We are one of the few tech companies with a female CEO and 1/3 of our engineering team is made up of women — well above the industry norm. Walking our floors, you’ll find people of every shape, color, ethnicity and creed. If you are looking to join a team of innovators and trail blazers who value diversity of thought and experience, then JOOR is a great choice for you.

We’re fixing the most broken process in business. Whether it’s SaaS, hardware, or contractors, a typical B2B purchase drags on for 3+ months, spawns 50+ emails, and pulls in multiple stakeholders across Finance, Legal, Security, and IT. Nobody likes it, and it slows businesses down. Omnea exists to change that. Our AI-native platform connects the people, steps, and systems so buying just works. Employees have one place to make requests, the right approvals run automatically, renewals and supplier risk checks are handled on time, and leaders get clear visibility into how, when, and why money is being spent. This matters more now than ever: volatile markets demand capital efficiency, businesses who adopt AI quickly have a competitive advantage, and evolving regulation demands evidenceable controls—so buying has to be fast and compliant by default. Founded in 2022, we’re trusted by global enterprises including Spotify, Adecco Group, Albertsons, Wise, MongoDB, and Monzo. Our team previously built Tessian (backed by Sequoia; acquired by Proofpoint) and we’ve raised $75M from Khosla Ventures, Insight Partners, Accel, Point Nine, and First Round.

Mercata is a secure AI sidekick for fundamental investors. We turn unstructured internal and external data into a real-time, queryable research environment so analysts and portfolio managers can move faster, ask better questions, and make more confident decisions. With Mercata, research teams ask layered, high-context questions that traverse companies, people, and time, and get traceable, source-linked answers. The system scans filings, press releases, and news in real time and surfaces what is new and factual, highlighting potential impacts on existing investment theses. It frees analysts from data mining so they can produce unique insights and apply their judgment. Teams can integrate proprietary research into Mercata’s dynamic intelligence layer, creating a unified system of record for faster recall, deeper analysis, and clear decision trails.

The idea for Perlego was born when our founders, Gauthier and Matt, were struggling with the cost of textbooks as students. From that first search for a more affordable alternative, Perlego has grown into a business that is breaking down the barriers to education for students globally.