Venture Capital

Andreessen Horowitz (a16z)

Andreessen Horowitz is a global venture firm that led ElevenLabs' early growth rounds and participated again in the company's 2026 Series D. The firm is active across AI infrastructure, developer tools, enterprise software, and consumer internet.

United KingdomLondonSeed to GrowthAIDeveloper ToolsEnterprise Software

Details

Location

London, United Kingdom

Category

Venture Capital

Stage

Seed to Growth

Profile

/united-kingdom/venture-capital/andreessen-horowitz-a16z

Portfolio startups

Startups this investor has backed

ElevenLabs

London, United Kingdom · Startup

AI voice synthesis platform creating realistic multilingual speech for dubbing, audiobooks, and virtual agents.

StartupGrowthAIAudio

ElevenLabs

Warsaw, Poland · Startup

A decacorn AI audio company co-founded by Polish-raised engineers, focusing on AI-powered voice technology and generation.

StartupDecacornAIAudioVoice Technology

Similar entries

Matched by sector and location overlap; not a confirmed investment portfolio

11x

London, United Kingdom · Startup

11x is the breakout star of the UK's agentic AI wave, known for building "digital workers" that replace full job functions rather than merely assisting them. Founded in 2022 by Hasan Sukkar, the company frames its product as autonomous employees rather than software tools. That positioning is controversial, but it resonates with revenue teams seeking to eliminate manual drudgery and scale outreach without linear headcount growth. The flagship product, Alice, is an AI Sales Development Representative that can source leads, research accounts, craft highly personalized outreach, and follow up continuously. In late 2024, 11x launched Jordan, a multilingual AI phone agent that conducts real-time voice conversations for qualification and support in more than 30 languages. Together, these agents can run a large portion of the outbound funnel end-to-end, from initial outreach to handoff, with human oversight focused on high-value exceptions. By early 2026, 11x had exploded in valuation after a Series B led by Andreessen Horowitz, a rare win for a UK-first startup. The company processes millions of interactions for high-growth tech companies such as Otter.ai and Airwallex and is expanding its footprint in San Francisco to preempt US-based competitors. The roadmap centers on "digital teams" that coordinate multiple agents across tasks: one agent identifies a lead, another calls, a third negotiates logistics, and a final agent drafts the contract. This orchestration layer is the company's strategic bet on becoming the default system for revenue operations. The company's roots include Y Combinator's Summer 2023 batch, which accelerated its US network and credibility, and its UK engineering base sits in the London Bridge tech hub. Investor support spans US and European capital: a16z led the Series B, Benchmark led the Series A, Lux Capital participated early, Quiet Capital backed growth, and 20VC provided influential local support. In 2026, 11x is the UK's most visible play on AI-native revenue teams, aiming to become a category-defining platform for autonomous sales operations.

StartupGrowthAIAutomationSales

3VC

Vienna, Austria · Accelerator

Founded 2017 as Capital300. Series A investor focused on European tech challengers, especially DACH and CEE origins including Austria, Germany, Switzerland, Poland, and Czechia.

AcceleratorSeries AEnterprise SoftwareDeveloper ToolsConsumer Internet

Anyline

Vienna, Austria · Startup

Anyline builds vision-AI software that turns cameras into data-capture and mobile inspection tools for enterprises.

StartupGrowthComputer VisionEnterprise SoftwareAI

Blockbrain

Berlin, Germany · Startup

Blockbrain builds private enterprise AI assistants that connect to internal knowledge tools such as Slack, Notion, Google Drive, and email. The platform creates context-aware internal search and answer workflows to reduce information fragmentation and speed up employee access to institutional knowledge.

StartupEarly StageAIEnterprise SoftwareB2B SaaS

Comudel

Lisbon, Portugal · Startup

Comudel develops a business operating system that automates workflows, legal contract handling, and AI-assisted financial operations for companies. Founded in 2022, it is associated with Unicorn Factory Lisboa and Instituto Pedro Nunes, operates from The Fintech House in Lisbon, and participated in the SPRINT accelerator focused on compliance and enterprise operations.

StartupEarly StageFinTechEnterprise SoftwareAI
View profileWebsite not public

Comments

New comments are moderated before publishing

Loading comments...

Checking login status...