Concept Ventures
20 Victoria Street, London, SW1H 0NB, United Kingdom
Overview
Concept Ventures is the UKs largest dedicated pre-seed fund, focused on backing founders reshaping how we work, play, and learn. As a firm built by industry outsiders, we understand the importance of being flexible, founder-first partners at the earliest of stages. We can shape or join your rounds of up to £2m, with capacity to follow-on to Series-A & beyond.
- Total investments
- 33
- Lead investments
- 10
- Investments · 12mo
- 8
- Active investors
- 5
Sector focus
- B2B
- Enterprise
- Enterprise Software
- Finance
- Financial Services
- FinTech
- Gaming
- Marketplace
Investment portfolio
- Oshen
Participated · Equity · Aug 2026
Oshen develops 1.2-metre C-Star unmanned surface vehicles that are wind- and solar-powered, can operate autonomously for months, and send data by satellite. The robots are light enough for a single person to launch from a boat and are designed to operate in coordinated groups that can cover hundreds of miles or concentrate at specific locations. Oshen’s C-Stars were the first uncrewed vehicles to collect real data from inside a Category 5 hurricane, and the company’s longest mission lasted eight months at sea. Manufacturing is now based in Plymouth and output has scaled from 15 units produced over the company’s first three years to a cadence of 15 robots every six weeks, with 100 additional units ordered. Customers and collaborators include the US Navy’s Naval Meteorology and Oceanography Command and partners such as ZeroUSV and MarineAI on defence-related trials. The company has grown from seven employees in September 2025 to almost 30 employees as it pursues higher-volume, lower-cost deployments to compete with larger rivals like Saildrone, Sofar Ocean and Boeing’s Liquid Robotics.
- Dex
Participated · Seed · Apr 2026
Dex offers an AI talent agent that engages job seekers via voice or text to capture detailed profiles, benchmark compensation, surface curated job openings and prepare candidates for interviews. Its conversational agent is built on a mix of models from Google, Anthropic and OpenAI, and candidate-to-employer matching is driven by a proprietary matching engine based on traditional machine-learning techniques. The company focuses on hiring for AI researchers, software developers, machine-learning and quantitative engineers and has more than 15,000 engineers signed up. Over 50 technology companies, including Lovable, ElevenLabs, Synthesia, Granola and Fyxer, use the service. Since beginning to charge in late 2025, Dex has reached roughly a $1.8 million annualized revenue run rate and charges employers 20%–30% of a hired candidate’s salary. Founded by Paddy Lambros in early 2025 and headquartered in London, Dex plans to expand with offices in New York and San Francisco later this year.
- Connectome Health
Participated · Seed · Apr 2026
Connectome's core product repeatedly measures brain activity to build individualized baselines and detect subtle cognitive changes over time. The platform integrates neural data with lifestyle factors such as sleep and activity to provide contextual insights into why cognitive performance shifts. The company says its approach extends brain monitoring beyond one-time clinical tests into real-world, longitudinal tracking and targets applications including ADHD and dementia detection. Connectome builds on research from Imperial College London's LUCID study and was founded in 2024 by neuroscientists Lucas Scherdel and Dr Rufus Mitchell-Heggs. It is based in Zurich and London and plans to roll out its product with select partners while continuing R&D and expanding into broader health and diagnostic use cases. Financially, Connectome recently closed a $2 million pre-seed round that included over $115,000 in non-dilutive public funding.
- Tattvam AI
Participated · Seed · Feb 2026
Founded in 2023 by Bragadeesh Suresh Babu and Lannan Jiang, Tattvam AI is building an AI system that deeply understands circuit structures and autonomously solves complex semiconductor design tasks. Its reasoning model works from first principles, factoring in constraints, trade-offs, and interdependencies to cut typical chip design cycles from years to weeks. By automating key elements of electronic design automation (EDA) workflows, the company seeks to make custom silicon more accessible, lower development costs, and enable rapid iteration on next-generation chips. Tattvam AI’s technology targets purpose-built processors that can deliver up to 100× performance gains over general-purpose GPUs for specific workloads such as AI training and inference. The startup plans to launch its first commercial product in the coming months while collaborating with leading chip design teams. Proceeds from its recent financing will be deployed to grow the engineering team, accelerate research, and expand industry partnerships. No revenue or user metrics have been disclosed to date.
- Antidote
Participated · Seed · Jan 2026
Antidote develops billing compliance software that integrates with law firms’ existing time-recording and practice-management systems to review time entries in real time. Its AI checks each entry against Outside Counsel Guidelines and internal policies, flags potential issues, and suggests compliant revisions before invoices are submitted. By moving compliance upstream, the platform aims to curb the 8–12 percent of billable hours typically lost to write-offs and rejected invoices caused by manual, end-of-month reviews. The software is already in use at firms across the United States, United Kingdom, and Australia, demonstrating early international traction. With fresh capital, Antidote plans to deepen product capabilities, enhance integrations, and scale adoption among global law firms. The company is focused on expanding its U.S. presence while continuing to address revenue leakage and billing friction through automated, real-time compliance.