Top Tech Startups in England, United Kingdom in 2026

Collabri is a mobile application that provides a peer to peer marketplace for services encompassing small gigs and jobs as well as leisure activities.

We're an early stage security startup founded by 2 experienced technical leaders from Tessian (former Head of Eng and former Lead Architect). Our product helps security teams quickly and accurately detect intrusions in their cloud environment using canaries. We're Series A stage and about to ramp up the company from 24 to 32.

Nivoda provides jewellery businesses with a simple solution to strengthen profits, increase efficiency and accelerate growth with its B2B diamond marketplace. Designed to save you time and money whilst giving you access to the world’s diamond supply at the best prices with zero inventory risk, Nivoda is trusted by thousands of retailers all over the globe.

Infrawatch is building the world’s first real-time adversary infrastructure intelligence platform - turning the global internet into a live, high-fidelity map of malicious networks, proxies, and command-and-control servers before they’re ever used in attacks. Every day, Infrawatch scans the entire public IPv4 and IPv6 space, generating over 150 million actionable indicators. Our proprietary rule engine and enrichment pipeline transform raw internet telemetry into curated, analyst-ready intelligence that powers fraud prevention, threat detection, and national-scale defence. Existing tools are fragmented: broad but shallow, or narrow but blind. Infrawatch unifies them. We give defenders visibility and attribution across all categories of adversary infrastructure, enabling them to block threats at the infrastructure stage - not after the breach. Our mission is simple but urgent: to be the infrastructure intelligence source of truth that keeps enterprises, governments, and critical systems ahead of adversaries. Built by defenders, for defenders, Infrawatch delivers unmatched coverage, precision, and speed. From cybersecurity giants to government agencies, organisations rely on Infrawatch’s live data feeds, APIs, and platform to identify malicious infrastructure, prevent fraud, and accelerate investigations. We care deeply about clarity: in data, in design, and in purpose. Our analyst-first platform makes billions of events feel effortless to explore, with modern workflows and visualizations that help teams see faster, decide smarter, and act sooner. We’re a small, focused, and remote-first team of engineers and researchers obsessed with quality, performance, and craft. Together, we’re building the backbone of proactive defence, a system that turns chaos into signal and helps the world beat the adversary.

Mercor partners with leading AI labs and enterprises to train frontier models using human expertise. With a talent network of more than 30,000 people across hundreds of domains, Mercor is building a new category of work where expertise powers AI advancement. While computing power and engineering talent have advanced rapidly, AI models can only improve when they learn from real human expertise across disciplines like law, medicine, coding, and finance. Mercor bridges this gap by connecting top professionals with frontier AI labs, enabling them to share insights, provide expert feedback, and shape the reasoning capabilities of next-generation models. Backed by $350 million in Series C funding led by Felicis, with Benchmark, General Catalyst, and Robinhood Ventures, Mercor is now valued at $10 billion. At its core, Mercor’s culture thrives on impact, agility, and growth. Mercor powers its teams to build at the frontier of technology.

Midas is a platform for composable onchain investment products. It enables strategy managers to turn institutional strategies into compliant tokens that offer investors full transparency, instant redemptions, and native composability across DeFi protocols such as Morpho and Pendle. Midas products are compliant financial instruments that are issued with clearly defined investor rights, onchain transparency, and robust operational controls. Each product’s underlying investment strategy is managed and monitored by appointed strategy managers, such as BlackRock, Hyperithm and M1 Capital, with ongoing oversight of risk parameters and performance. Founded in 2024 by Dennis Dinkelmeyer (formerly Goldman Sachs), Fabrice Grinda (FJ Labs), and Romain Bourgois (formerly Ondo Finance), Midas is backed by leading investors including RRE, Creandum, Framework Ventures, HV Capital, Ledger Cathay and Coinbase Ventures. To date, Midas has powered over $1.7B in asset issuance and paid out $37M in yield.