01Frontier AI
OpenAI
Frontier AI lab and maker of ChatGPT and the GPT models.
King's CrossGrowth
London · The AI capital of Europe
AI startups in London
London hosts more AI labs and startups than any city in Europe, from the frontier labs clustered around King's Cross to applied-AI companies across Shoreditch, Soho and the City. This is the complete index of 149 AI companies building in London, with funding, neighbourhood and 1328 live open roles.
149
London companies
1328
King's Cross · 10City of London · 6Shoreditch · 6Paddington · 3Marylebone · 3Old Street · 3Soho · 2Fitzrovia · 2Clerkenwell · 2Colchester · 2Knowledge Quarter · 1Covent Garden · 1Notting Hill · 1Bishopsgate · 1Liverpool Street · 1Fetter Lane · 1Bermondsey · 1Nine Elms · 1Swindon · 1Plymouth · 1Aberdeen · 1Newcastle · 1
02AI Safety
Anthropic
AI safety company and maker of the Claude family of models.
Knowledge QuarterGrowth
03AGI Research
Google DeepMind
Alphabet's AI research lab behind the Gemini models and AlphaFold.
King's CrossSubsidiary
04Autonomous Driving
Wayve
Embodied-AI self-driving software, launching London robotaxi trials.
King's CrossSeries D
05AI Video
Synthesia
Turns text into professional videos with lifelike AI avatars.
King's CrossSeries E
06Voice AI
ElevenLabs
AI voice generation and text-to-speech for the digital world.
SohoSeries D
07Biomedical AI
Isomorphic Labs
Alphabet's AI drug-discovery company designing therapeutics with AlphaFold-derived models.
King's CrossSeries B
08AI Research
Meta
Meta's FAIR lab researches NLP, vision and reinforcement learning in London.
King's CrossPublic
09Frontier AI
Microsoft
Microsoft AI's London hub advances state-of-the-art foundation models.
PaddingtonPublic
10Frontier AI
xAI
Elon Musk's frontier AI lab and maker of the Grok chatbot.
SohoSeries E
11AI Translation
DeepL
Cologne-based AI firm specialising in neural machine translation.
Covent GardenGrowth
12Generative Media
Stability AI
Open-model generative AI behind Stable Diffusion image and media tools.
Notting HillGrowth
13Dev Tools
Cursor
AI code editor opening its European HQ in London.
LondonSeries D
14AI Search
Perplexity
AI answer engine building out a London office for Europe.
City of LondonSeries E
15Data + AI
Databricks
Data and AI platform quadrupling its London HQ.
FitzroviaGrowth
16Generative Media
Runway
US generative-video firm opening a London European HQ.
LondonGrowth
17Legal AI
Harvey
AI software for legal and professional-services firms.
LondonSeries E
18App Builder
Lovable
Swedish app-builder opening a London office; build software via natural language.
LondonSeries B
19Meeting Notes
Granola
London AI notepad that enhances notes from back-to-back meetings.
ShoreditchSeries C
20Legal AI
Legora
Swedish legal AI platform with a London engineering hub.
LondonSeries D
21Decision Intelligence
Quantexa
Decision intelligence connecting siloed data to fight financial crime.
BishopsgateSeries F
22Conversational AI
PolyAI
Builds human-like enterprise voice AI agents for customer service.
PaddingtonSeries D
23Applied AI
Faculty
Applied AI for enterprise decision intelligence, acquired by Accenture.
MaryleboneSubsidiary
24Computer Vision
Tractable
Computer vision AI assessing vehicle and property damage for insurers.
ShoreditchSeries E
25Identity AI
Onfido
AI document and biometric identity verification, now part of Entrust.
Old StreetSubsidiary
26Legal AI
Luminance
AI platform that reviews, drafts and negotiates legal contracts.
FitzroviaSeries C
27Biomedical AI
Causaly
Generative AI platform accelerating biomedical research and drug discovery.
LondonSeries B
28Fintech AI
Cleo
AI-powered money assistant app for budgeting and financial advice.
ShoreditchSeries C
29AI Skills
Multiverse
Professional apprenticeships in AI, data and tech skills.
PaddingtonSeries D
30AI Video
Colossyan
AI avatar video platform for corporate learning content.
ShoreditchSeries A
31Fintech AI
9fin
AI-native data and analytics platform for debt capital markets.
City of LondonSeries C
32Sales AI
Apollo.io
AI sales intelligence and engagement platform with 210M+ contacts.
City of LondonGrowth
33AI Research
Ineffable Intelligence
David Silver's lab building reinforcement-learning systems toward superintelligence.
LondonSeed
34Sales AI
Airspeed
Agent-native execution platform automating sales workflows for revenue teams.
LondonSeries A
35Engineering AI
PhysicsX
AI-native simulation platform for industrial engineering and manufacturing.
LondonSeries C
36Legal AI
Robin AI
AI contract drafting, review and negotiation for legal teams.
Liverpool StreetSeries C
37HR AI
Beamery
AI-powered talent lifecycle and skills intelligence platform for enterprises.
LondonSeries D
38Financial-Crime AI
ComplyAdvantage
AI-driven financial crime and fraud risk detection platform.
Fetter LaneSeries C
39Healthcare AI
Cera
AI-driven home healthcare platform reducing strain on the NHS.
LondonSeries C
40Enterprise AI
Sana
AI knowledge and agent platform, now part of Workday.
LondonSubsidiary
41AI Infrastructure
Nscale
AI hyperscaler providing GPU cloud and data-centre infrastructure.
LondonSeries C
42Drug Discovery
BenevolentAI
AI knowledge-graph platform for target identification and drug discovery.
LondonPrivate
43AI Security
Mindgard
Platform for testing the security of AI models.
LondonSeries A
44Enterprise AI
Writer
End-to-end generative AI platform for building enterprise agents.
MaryleboneSeries C
45Conversational AI
Sierra
Conversational AI agents transforming customer service.
LondonSeries B
46Hospitality AI
Lighthouse
AI pricing and revenue management platform for hotels.
LondonSeries C
47Legal AI
Genie AI
AI platform automating legal contract drafting and review.
LondonSeries A
48Media Intelligence
Signal
AI-powered reputation, risk and media intelligence from external data.
Old StreetSeries C
49AI Biotech
Relation Therapeutics
Biotech using machine learning and multi-omics for drug discovery.
LondonSeed
50AI Biotech
LabGenius
ML-driven protein engineering platform discovering novel therapeutic antibodies.
BermondseySeries B
51Defense AI
Adarga
UK sovereign defence-tech firm building applied AI for intelligence.
LondonSeries A
52Industrial AI
FYLD
London BCG spinout using AI for frontline worker safety.
LondonSeries B
53Dev Tools
Cosine
Y Combinator-backed maker of Genie, an autonomous AI software engineer.
LondonSeed
54Dev Tools
Vercel
Frontend cloud and maker of Next.js and the v0 AI app builder.
LondonSeries E
55Enterprise AI
Conduct AI
AI operating system that modernises and migrates complex enterprise systems like SAP.
LondonSeries A
56World Models
Odyssey
AI lab building generative world models: interactive, explorable 3D worlds.
LondonSeries B
57AI Dev Tools
Tessl
Spec-driven development platform where engineers define specs and AI agents build, test and maintain the code.
King's CrossSeries A
58AI CRM
Attio
AI-native CRM that automates and customises go-to-market workflows for sales, operations and revenue teams.
ClerkenwellSeries B
59AI Assistant
Fyxer
AI executive assistant that organises inboxes, drafts email replies and writes meeting notes automatically.
LondonSeries B
60Procurement AI
Omnea
AI-native procurement and spend management platform centralising purchasing, supplier management and risk governance.
LondonSeries B
61Payments
Primer
Payments orchestration infrastructure that connects processors, optimises routing and unifies the payment stack.
City of LondonSeries C
62Incident Management
incident.io
Incident management platform that helps engineering teams respond to, resolve and learn from outages.
Old StreetSeries B
63AI Security
Trent AI
Security platform protecting AI agents from prompt injection, tool misuse and data exfiltration across their lifecycle.
LondonSeed
64Industrial AI
Scope AI
AI inspection platform that captures field findings via audio and video, then autofills forms and generates reports.
LondonSeries A
65Agentic AI
Gradient Labs
Builds autonomous AI customer-support agents purpose-built for regulated industries like financial services.
City of LondonSeries A
66Agent Billing
Paid
Outcome-based billing infrastructure so businesses can charge for AI agent results rather than seats.
LondonSeed
67Generative Media
Wonder Studios
AI-native entertainment studio producing films and series built from the ground up for AI collaboration.
LondonSeed
68Agentic Commerce
Swap
Ecommerce operating system unifying cross-border selling, tax, returns and agentic storefronts for global brands.
ShoreditchSeries C
69AI Security
Maze
Deploys AI agents that investigate, triage and remediate cloud and code security vulnerabilities.
LondonSeries A
70PropTech AI
Dwelly
AI-powered lettings and property management platform automating tenant, payment and maintenance workflows.
LondonSeries A
71Finance AI
Stacks
Uses agentic AI to automate financial close, reconciliations and journal entries for enterprise finance teams.
LondonSeries A
72Customer Support
Plain
AI-native customer support platform built for scaling B2B teams across Slack, chat and email.
LondonSeries A
73Customer Service AI
Elyos AI
AI customer service agents that handle calls, book jobs and manage diaries for trades and field-service businesses.
LondonSeed
74Dev Tools
Meticulous
AI that automatically writes and maintains end-to-end frontend browser tests without engineers writing them.
LondonSeed
75Legal AI
Wordsmith AI
Fleets of AI legal agents that automate contract review and support in-house legal teams.
LondonSeries A
76Energy AI
tem
AI-native infrastructure for energy transactions, stripping hidden fees and inefficiencies from every deal.
Nine ElmsSeries B
77Real Estate AI
Orbital
AI assistant for property due diligence that extracts key insights from real estate legal documents.
LondonSeries B
78Industrial AI
Applied Computing
Foundation models that optimise high-value operations in refineries, LNG plants and petrochemical facilities.
LondonSeed
79Marketing AI
Dragonfly AI
Predictive attention AI that forecasts where people look to help brands optimise creative and ad assets.
ClerkenwellSeries A
80Conversational AI
Zenning AI
Deploys proactive AI employees inside Slack and Teams that automate workflows and complete real tasks.
LondonSeed
81Payments AI
Adfin
Agentic finance platform automating invoicing, payment collection and cashflow for small businesses.
ShoreditchSeries A
82AI QA
Tekton Dynamics
AI agents that stress-test and quality-assure other AI products; YC W24, founded by Oxford and Imperial PhDs.
LondonSeed
83Fintech AI
Model ML
AI workspace built for financial services, automating analysis and client-ready documents for banks and investors.
King's CrossSeries A
84AI Security
Gecko Security
AI security engineer that uses LLMs to find and fix complex business-logic vulnerabilities in codebases (YC F24).
LondonSeed
85AI Agents
Smooth
Fast, reliable AI browser agent API that autonomously performs web actions across sites (YC F24).
LondonSeed
86Compliance AI
Arva AI
AI workforce automating financial-crime compliance across screening, KYB, KYC and transaction monitoring for banks (YC S24).
LondonSeed
87AI Chemistry
ReactWise
No-code AI co-pilot using Bayesian optimisation to accelerate chemical process development for pharma and biotech (YC S24).
LondonSeed
88Construction AI
SchemeFlow
Uses generative AI to draft the technical and environmental engineering reports required for construction projects (YC S24).
LondonSeed
89ML Infra
RunLocal AI
AI agent that automates optimisation and deployment of model inference on edge hardware (YC S24).
LondonSeed
90Wealth AI
Saturn
AI operating system automating compliance, back-office and research workflows for wealth managers and advisers (YC S24).
LondonSeries A
91Consumer AI
et al.
LLM-powered feed app distilling newsletters, papers and articles into short, personalised insights (YC S24).
LondonSeed
92Generative 3D
ideate.xyz
Web-based AI 3D art suite taking ideas from concept to production-ready, textured assets (YC S24).
LondonSeed
93AI Assistant
Zuni
Chrome sidebar extension giving contextual AI assistance, drafting emails and replies across your browser tabs (YC S24).
LondonSeed
94Retail AI
Rastro
AI catalogue-operations platform turning messy vendor data into launch-ready products through enrichment and matching (YC S24).
LondonSeed
95Compliance AI
Cardamon
AI compliance co-pilot helping regulated financial firms ingest regulation and launch products faster (YC W25).
LondonSeed
96AI Simulation
Artificial Societies
Builds networks of AI personas grounded in real human behaviour to simulate target-audience and stakeholder reactions (YC W25).
LondonSeed
97Finance AI
finbar
AI investment analyst automating financial modelling, research and data analysis for hedge funds and investors (YC W25).
LondonSeed
98Legal AI
SAMMY Labs
Builds a foundation model for computational law that resolves regulatory questions via auditable legal-authority logic (YC W25).
LondonSeed
99AI Agents
Leeroo
Trainable AI agents that continuously learn an organisation's knowledge and ship data and AI programmes (YC X25).
LondonSeed
100AI Agents
Trace
Context-aware orchestration platform routing repetitive workflow tasks between humans and AI agents (YC S25).
LondonSeed
101Research AI
Motives
Team of AI agents running qualitative consumer research, moderating and analysing video interviews for brands (YC S25).
LondonSeed
102AI Infra
HelixDB
Open-source graph-vector database giving AI agents low-latency memory and relationship-aware retrieval for RAG (YC X25).
LondonSeed
103Legal AI
Crimson
Case intelligence platform for litigation that organises documents and answers questions with citations across pleadings (YC X25).
LondonSeed
104Accounting AI
Combinely
AI co-worker automating data extraction, tax research and review across tax, audit and accounting workflows (YC X25).
LondonSeed
105Sales AI
throxy
Vertical AI agents plus human callers that book qualified B2B sales meetings into traditional industries (YC X25).
LondonSeed
106AI Infra
Parsewise
API for agentic multi-document processing giving risk teams validated, source-traced data and AI oversight (YC X25).
LondonSeed
107ML Infra
Plexe
Open-source agents that build, evaluate and deploy production-grade predictive ML models from a prompt (YC X25).
LondonSeed
108Dev Tools
cubic
AI-powered code review platform that learns your codebase, flags bugs and helps teams merge pull requests faster (YC X25).
LondonSeed
109AI Platform
Waffle
Platform to discover and build custom AI chatbots, plus no-code AI web apps without managing a backend (YC X25).
LondonSeed
110ML Infra
mlop
Open-source, performant experiment tracking for ML training, a Weights & Biases alternative with API compatibility (YC X25).
LondonSeed
111PropTech AI
Brickwise
AI property manager automating maintenance triage, contractor scheduling and tenant communication for landlords (YC F25).
LondonSeed
112Finance AI
Zalos
Computer-use AI agents automating reconciliation, billing and month-end close inside existing ERP and banking systems (YC F25).
LondonSeed
113AI Agents
Lua Global
Unified mid-market AI agent platform letting companies build and deploy custom agents for sales, support and operations (YC F25).
LondonSeed
114Restaurant AI
Zavo
AI-powered operating system for restaurants unifying payments, point of sale and finance and operations agents (YC F25).
LondonSeed
115Finance AI
Rex
AI-native order-to-cash service whose agents run collections, reconciliation and portal uploads end to end (YC S26).
LondonSeed
116AI Agents
Whitespace
AI operating system for wholesale distributors, deploying self-improving agents for inventory planning, support and order entry (YC S26).
LondonSeed
117Govtech AI
Xylo
AI workspace for local-government planning officers that validates applications, checks policy and drafts reports.
LondonSeed
118Energy AI
Axle Energy
Axle Energy's software platform turns home EV chargers, batteries and heat pumps into a coordinated virtual power plant that trades flexibility into electricity markets.
LondonSeries A
119Finance AI
Capsa AI
Capsa AI provides an agentic AI platform that indexes a private capital firm's internal knowledge to automate deal sourcing, due diligence and portfolio monitoring.
King's CrossSeries A
120Healthcare AI
01Health
01Health provides a technology platform that combines AI tooling, clinical protocols and remote specialist oversight so local clinics can deliver specialist treatments like orthodontics and dental sleep medicine.
LondonSeries A
121Industrial AI
Gigaton
Gigaton builds self-learning AI control software that replaces legacy control systems in energy-intensive plants such as cement, steel, glass and chemicals to optimize production and cut emissions.
LondonSeries A
122Climate AI
Mondra
AI-powered supply-chain intelligence platform that builds a live digital twin of food products to track carbon, cost, and risk from farm to fork.
LondonSeries A
123Finance AI
Finster AI
AI-native research platform that automates financial analysis and workflows for investment banking and asset management teams with source-cited AI agents.
King's CrossSeries A
124Climate AI
Isometric
Agentic certification platform that uses AI agents to verify carbon-removal and industrial claims, with human experts making final decisions.
LondonSeries A
125Education AI
Inkling
AI tutor delivering personalised, Socratic 1-to-1 sessions aligned to UK exam boards (GCSE and A-level), deployed inside schools with teacher oversight.
LondonSeed
126Sales AI
Curvo
Real-time AI sales coaching and deal intelligence that surfaces guidance from your CRM and playbooks live during enterprise sales calls.
LondonSeed
127LLMOps
RunAgain
Observability and continuous-evaluation infrastructure for tracing, testing and iteratively improving AI agents in production.
LondonPre-seed
128Voice AI
Dave Communication
AI receptionist and business-memory phone system that answers calls, quotes prices and books jobs for trades and service businesses.
LondonSeed
129Community AI
HubPlus
All-in-one community operating system with an AI copilot for running events, selling memberships and monetising a community.
LondonSeed
130Enterprise AI
Arkava
Subscription AI automation agents running on UK-sovereign infrastructure for enterprises, government and defence with data-residency compliance.
LondonBootstrapped
131AI Consulting
InnovAItive Solutions
AI transformation and automation consultancy helping UK businesses adopt AI across their operations.
LondonBootstrapped
132Generative Media
Gracia AI
London XR startup building a cloud pipeline for production-ready volumetric video using 4D Gaussian Splatting for VR, AR and VFX.
LondonSeed
133Defense AI
Pyra
UK-sovereign defence startup fusing drones, satellites, sensors and legacy kit into one platform for the MoD and allies; reportedly seeking around $200m pre-launch.
MarylebonePre-seed
134Voice AI
fonio.ai
Vienna voice-AI firm building out a London office; AI phone agents that answer and place business calls in real time.
LondonSeed
135Fintech AI
Ramp
New York spend-management fintech standing up a London team; AI agents that automate corporate cards, expenses and accounts payable.
LondonSeries F
136Customer Service AI
NiCE
Israeli CX software firm with City and Southampton offices; its CXone Mpower platform runs agentic AI agents for contact centres.
City of LondonPublic
137HR AI
Dex
AI talent agent for engineers: matches candidates to roles, coaches them through the process, and charges employers a recruiter-style fee on hire.
LondonSeed
138AI Infrastructure
Callosum
Founded by two Cambridge neuroscience PhDs; systems software that breaks an AI workload into tasks and routes each to the model and chip best suited to it, so heterogeneous silicon can stand in for banks of identical GPUs. First equity investment from the UK's Sovereign AI Fund.
LondonSeed
139AI Skills
Lead Academy
Swindon online course provider (Global Education Explore Ltd); CPD- and QLS-certified training across IT and professional skills, including ChatGPT prompt engineering and data analysis.
SwindonPrivate
140AI Chips
Fractile
Inference silicon that puts compute and memory on the same die, skipping the DRAM bottleneck; claims LLMs run far faster at a fraction of the running cost. London HQ plus a Bristol hardware engineering site, with first datacentre chips due 2027.
LondonSeries B
141AI Infrastructure
Fireworks AI
San Mateo inference platform for open models, serving 40tn+ tokens a day; valued at $17.5bn in July 2026 and now standing up an EMEA team in London.
LondonSeries D
142Cybersecurity AI
Prevalent AI
Founded by ex-GCHQ and Darktrace leaders; turns scattered enterprise data into a knowledge graph that security teams and AI agents can reason over, kept inside the customer's own infrastructure. Profitable and bootstrapped for nine years before raising outside capital.
LondonGrowth
143Education AI
Medly AI
AI tutor for GCSE, A-level and IB exam prep, built by two former NHS doctors who couldn't afford tutoring themselves; marks practice answers and talks through where the marks went. 400,000+ UK users since launching in early 2025.
LondonSeed
144Marine Robotics
Oshen
Imperial spin-out making metre-scale wind- and solar-powered autonomous vessels that sail for months gathering ocean sensor data; flown in swarms for the Royal and US Navies, NOAA and the Met Office.
PlymouthSeed
145Climate AI
SmartResilience
Climate risk platform (formerly Balkerne) pairing predictive modelling with AI to forecast flooding, extreme heat and water stress against physical sites; its work with Sainsbury's booked over £3m of flood savings in year one.
ColchesterSeed
146Agritech AI
Versatile RobotX
University of Essex spin-out building autonomous fruit- and vegetable-picking robots — embedded AI, machine vision and manipulator arms — sold as robotics-as-a-service against farm labour shortages.
ColchesterPre-seed
147Datacentre Cooling
HexSeed Technology
Grows synthetic diamond films from captured CO2 straight onto fabricated GaN chips, pulling heat off the power semiconductors that feed AI datacentres. Developed with University of Bristol researchers.
AberdeenSeed
148AI Infrastructure
Modal
New York serverless cloud for AI workloads — custom model inference, fine-tuning, RL and agentic sandboxes — scaling from zero to hundreds of GPUs on containers defined in code. Raised $355m at a $4.65bn valuation in May 2026 and is now opening a London office.
LondonSeries C
149Fintech AI
Noggin HQ
One of very few new UK credit reference agencies licensed in a decade; scores creditworthiness from permissioned open-banking cashflow rather than credit history, with bias monitoring on the models. Founded by two friends who were both refused credit while working full time.
NewcastleSeed
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