Key Takeaways
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London venture capital remains resilient with $15.3 billion deployed in 202 despite a major shift toward high conviction sectors like Vertical AI and Climate Tech.
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Median Seed valuations have stabilized at approximately $2M pre money requiring founders to demonstrate significantly higher revenue traction than in previous cycles.
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Secure your funding strategy by understanding why investors now demand a 24 to 36 month cash runway to survive the Series A bottleneck where graduation rates have dropped to 2%.
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Navigate the critical SEIS and EIS tax relief application process early as HMRC processing times have extended to between 4 and 6 weeks.
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Access a curated list of 17 active London VC firms segmented by stage and sector to identify the right partners for your 2026 fundraising efforts.
The 2026 London VC Climate: Deal Count & Check Sizes
London remains Europe’s undisputed capital for liquidity, deploying $15.3 billion in 2025 despite an 11% year-on-year contraction in total deal volume. While the growth-at-all-costs era has ended, capital density has spiked in high-conviction verticals: AI now commands a record share of funding (up to 33% by some estimates), and Climate Tech continues to see oversubscribed rounds. This guide details the 17 most active funds and the operational benchmarks, specifically the shift to $2M+ median Seed rounds, required to raise in a market defined by high diligence and valuation discipline.
- Valuation Benchmarks: Median Seed valuations have stabilized at $2M (~£1.6M) pre-money. Founders are now expected to demonstrate 75% more revenue traction to justify these terms.
- Sector Dominance: Capital is consolidating. AI startups raised a record $7.9B in 2025, while FinTech funding corrected to $4.2B, signaling a rotation from generalist B2B SaaS into verticalized Deep Tech.
- SEIS/EIS Bottlenecks: With 90% of early-stage deals relying on tax assurance, HMRC processing times are averaging 4–6 weeks. Applications must be submitted before term sheets are signed to avoid stalling the close.
- The "New" Runway Standard: The 18-month buffer is obsolete. To survive the Series A bottleneck, investors now require a 24–36 month cash runway post-raise to account for longer sales cycles and macroeconomic volatility.
17 Active London VC Firms Investing in 2026
1. Seedcamp
Focus and industry: The team at Seedcamp focuses on Software, Fintech, SaaS companies.
Related Resource: FinTech Venture Capital Investors to Know
Funding stage: Seedcamp focuses on pre-seed, seed, and series A investments.
As put by the team at Seedcamp, “We invest early in world-class founders attacking large, global markets and solving real problems using technology. We are running our Investment Forum process entirely online and are proactively investing in European companies across pre-seed and seed who are building the breakout businesses of tomorrow.”
While Seedcamp is located in London, they will invest in companies across the globe.
2. Index Ventures
Focus and industry: The team at Index invests in companies across every sector.
Funding stage: Index Ventures invests in stages from seed through growth.
As put by the team at Index Ventures, “Other firms invest in deals, Index invests in people. A deal is transactional. Relationships endure, and ours are based on curiosity, thoughtfulness, and deep conviction.” The team at Index invests in companies across the globe, across every stage and sector.
3. Accel Partners
Focus and industry: The team at Accel invests is agnostic in their industry focus.
Funding stage: Accel invests in every stage from seed to growth stage.
As put by their team, “Accel is a leading venture capital firm that invests in people and their companies from the earliest days through all phases of private company growth. Atlassian, Braintree, Cloudera, CrowdStrike, DJI, Dropbox, Dropcam, Etsy, Facebook, Flipkart, FreshWorks, Jet, Qualtrics, Slack, Spotify, Supercell, UiPath and Vox Media are among the companies the firm has backed over the past 35 years.”
4. Balderton Capital
Focus and industry: Balderton Capital is agnostic in their industry focus.
Funding stage: The team at Balderton invests in companies from seed to growth stage.
As put by their team, “Balderton Capital is an early-stage venture firm that’s based on the principles of teamwork and an intense dedication to building companies of lasting value. They provide superior service to entrepreneurs through a unique, team-oriented partnership. This team approach not only makes it more fun for them to come to work everyday, but more importantly, it benefits their portfolio companies. Instead of competing for resources, they share ideas, contacts and resources.”
5. Ascension
Focus and industry: The team at Ascension looks for, “a compelling business model capable of rolling out globally.”
Funding stage: Ascension funds seed and series A companies.
As put by their team, “Ascension is an early-stage VC built by exited entrepreneurs to back the next generation of tech and impact founders.”
The team at Ascension primarily invests in companies that are building in the UK.
6. MMC Ventures
Focus and industry: Fintech, Data-driven Health/Digital Health, Deep Tech, AI, Software, SaaS, Data Infrastructure.
MMC Ventures is one of the most active early-stage tech investors in Europe. Focusing on enterprise AI, fintech, data-driven health, data infrastructure & cloud, we back founders from Series A and Seed stages. During the past two decades, we have formed a unique understanding of what it takes for a start-up to scale. We distinguish ourselves through our commitment of going deeper – on the technologies we invest in, and the partnerships we build with founders.
Related Resource: 15 Venture Capital Firms Investing in VR
Funding stage: The team at MCC primarily invests from Seed-stage through Series A
“We conduct in-house research, providing us with a differentiated understanding of emerging technologies and sector dynamics to identify the areas and themes that have the potential to create the next multi-billion European success stories. Our portfolio spans enterprise AI, fintech, data-driven health, cloud and data infrastructure, with notable investments such as Snowplow, Copper, YuLife, Peak AI, Synthesia, Recycleye, MindsDB, Ably and Signal AI.” –MCC Ventures
Learn more about MMC Ventures by checking out their Visible Connect Profile here →
<h2=”Octopus Ventures”>7) Octopus Ventures
Focus and industry: According to their website, “Our teams are sector experts focusing on six exciting and meaningful areas: B2B Software, Climate, Consumer, Deep Tech, Fintech and Health.”
Funding stage: The team at Octopus invests from seed to series B.
As put by their team, “We back founders who are changing the world for the better. We invest where we can make the greatest positive impact, getting behind businesses that put people, community and the environment first.”
7. LocalGlobe
Focus and industry: LocalGlobe is agnostic in their industry focus.
Funding stage: The team at LocalGlobe primarily focuses on seed stage investments.
LocalGlobe is a venture capital firm that focuses on seed and impact investments. The team at LocalGlobe primarily focuses on companies located in the UK and Europe.
8. Connect Ventures
Focus and industry: List the focus, industry, or types of companies this VC typically invests in.
Funding stage: Give the funding stages this VC typically invests in.
As put by their team, “We’ve been investing in pre-seed and seed stage product companies since 2012, from our home in London. We’re a partner-only, Europe-wide, low volume, high conviction investment team.” The team at Connect Ventures primarily focuses on companies located in the UK and Europe.
9. Downing Ventures
Focus and industry: Downing Ventures is focused on healthcare businesses.
Funding stage: Downing Ventures does not publicly state what stage companies they traditionally fund.
As put by their team, “We offer investors the opportunity to invest in leading UK early-stage healthtech businesses. Your investment will support companies that develop evidence-based, tech-enabled clinical solutions that significantly improve access to high-quality care, improve clinical outcomes for patients, but also reduce the cost of delivery.”
10. Passion Capital
Focus and industry: Passion Capital is focused on digital media/technology companies.
Funding stage: Passion Capital is focused on early stage companies.
As put by their team, “Passion Capital is a partnership of entrepreneurs and operators who are applying our experiences to helping founders and early-stage teams build great digital media/technology companies.
We are committed to fostering an ecosystem of technology, collaboration and executional excellence in Europe, and we believe that the critical differentiator and key asset of a successful business is the passion and ability of its founders. We take pride in the caliber and success of all of our founders and teams including but nowhere near limited to GoCardless, Tray.io, Mendeley, Digital Shadows, urban, Adzuna, Smarkets, Ravelin, Nested, Tide, Spill, Marshmallow, Butternut Box,, PolyAI, Lendable and Monzo Bank.”
11. Notion Capital
Focus and industry: As put by their team, “We focus on B2B SaaS, using data/ML and tech to disrupt an industry. Industry agnostic.”
Funding stage: Notion Capital is focused on companies from seed to series B.
As put by their team, “Notion Capital is a VC firm focused on European SaaS and Cloud.
We’re here to support exceptional founders on their extraordinary journeys.”
12. Playfair Capital
Focus and industry: Playfair Capital is sector agnostic.
Funding stage: Playfair Capital focuses on pre-seed and seed stage investments.
As put by the team at Playfair Capital, “We’ve been helping ambitious and exceptional entrepreneurs build brilliant technology businesses since 2013. We’ve backed the founders of more than 60 companies including Mapillary (acq. Facebook), CryptoFacilities (acq. Kraken), Omnipresent, Orca AI, Ravelin, sprout.ai, Thought Machine, Trouva and Vinehealth.”
13. Fuel Ventures
Focus and industry: Fuel primarily invests in SaaS and marketplace companies.
Funding stage: The team at Fuel is focused on early stage investments.
As put by their team, “Fuel Ventures was founded by a successful entrepreneur who built his own company and scaled it to a £55m exit. We know how hard building fast growth companies is and use all our operational expertise and experienced network to help companies grow. We enjoy rolling our sleeves up and building companies alongside the founders and their teams.”
14. Beringea
Focus and industry: The team at Beringea backs both B2B and B2C businesses.
Funding stage: Primarily focused on Series A and Series B companies
As put by the team at Beringea, “When looking at businesses, we primarily look for a good business with a good busienss model. We aren’t in the unicorn hunting business, but rather look for sound investments that will generate sound returns. We back both B2B and B2C businesses.” The team at Beringea invests in companies in both the US and UK, with slightly different offers for each location:
15. RTP Global
Focus and industry: The team at RTP focuses on B2B and B2C Technology. According to their website, this includes "AI, B2B SaaS, DevOps, fintech, e-commerce and retail, health, tech, climate, and transport."
Funding stage: RTP Global invests in companies ranging from seed to Series B.
Learn more about RTP Global and check out their Visible Connect Profile below:
16. Kinetic Investments
Focus and industry: The team at Kinetic Investments focuses on AI, Crypto, Ecommerce, Marketplace, Media, SaaS.
Funding stage: Pre-Seed, Seed.
"We predominantly invest in AI-driven B2C solutions for traditional business models within the digital landscape, i.e. SaaS, eCommerce, marketplaces, and AIaaS."
17. Concept Ventures
About: Concept is the UKs dedicated pre-seed fund with a deep focus on people and entrepreneurial founding triats. They lead rounds of up to $2.5m, and work closely with teams through the first 12-18 months of their journeys - helping to lay the best foundations for the scaling to come.
Focus and industry: Concept Ventures is a generalist, pre-seed fund in London dedicated to first-cheque investing in Europe.
Funding stage: Concept only does initial cheques, but reserves capital for follow-on.
Sector Spotlight: Vertical AI vs. "Wrappers"
While AI startups captured 30% of all UK Seed capital in H1 2025, capital deployment has become highly selective. London VCs have largely stopped funding "Horizontal AI" (broad tools like "ChatGPT for X") and "GenAI Wrappers" (thin layers over OpenAI’s API) ), as horizontal platform funding is pacing below 2024 levels.
The "Smart Money" has rotated into Vertical AI:
- The Shift: Investors like MMC Ventures and Air Street Capital are prioritizing "Data Defensibility." They are funding models trained on proprietary, industry-specific datasets (e.g., LegalTech, BioTech, InsurTech) rather than generic LLMs. Vertical AI is now the dominant segment, accounting for 63.5% of all AI deal value in Europe.
- The Metric: For Vertical AI, the metric of success is no longer just efficiency; it is Workforce Replacement. Investors are looking for platforms that can automate end-to-end workflows (e.g., "Our software automates 80% of a paralegal's workflow") rather than just assisting them.
- Deal Volume: In 2025, the two primary "Verticals", FinTech and Life Sciences, combined for $6.5B in capital deployed ($4.2B in FinTech; $2.3B in Life Sciences), signaling where the deep tech capital is actually flowing
The SEIS/EIS Advantage: Tax Relief as a Fundraising Lever
London has solidified its position as a premier destination for startups aiming to raise capital, due to its unique advantages, including unmatched access to international markets, a highly skilled talent pool, and an innovation-friendly regulatory environment. As a global financial hub, London offers startups a gateway to markets across Europe and beyond, with more than 2,000 fintech companies alone benefiting from this strategic access. Many of the world’s largest tech firms, like Google and Microsoft, have established their European headquarters in the city, further boosting networking opportunities and creating a vibrant business ecosystem that attracts top-tier investors and talent alike.
London also boasts a diverse talent pool, drawing professionals from around the globe due to its international appeal and cultural richness. The city is home to a high proportion of AI engineering talent, and it attracts a significant number of graduates from prestigious universities like Imperial College London, which contributes to its reputation as Europe’s tech capital. This continuous influx of talent provides startups with the skilled workforce necessary to scale effectively and to innovate across fields like fintech, climate tech, and AI.
Additionally, London’s supportive infrastructure for startups extends to government-backed initiatives such as the Seed Enterprise Investment Scheme (SEIS) and the Enterprise Investment Scheme (EIS). These incentives encourage investments by offering tax reliefs to investors, making it more appealing to fund UK-based startups. London also hosts numerous accelerators and incubators, such as Seraphim Space, and Seedcamp, which offer early-stage support, mentorship, and resources to help startups accelerate growth and access funding more effectively.
Risk Factors: Valuation Compression & Due Diligence Timelines
While London offers significant opportunities for venture capital, founders face unique challenges, including high competition, high operating costs, and navigating post-Brexit regulations. Recognizing these hurdles and strategizing to address them can help founders enhance their appeal to investors and succeed.
1. The Series A Bottleneck: Why "Good" isn't Good Enough
The graduation rate from Seed to Series A in London has plummeted. Only ~2% of UK startups successfully graduated from Seed to Series A in the last cycle, down from ~8% previously. The median time to raise a Series A has also stretched to 2.1 years.
This "Crunch" has created a new requirement: The Seed Extension. Founders must now plan for a "bridge round" by default. Investors are no longer funding "product-market fit" (users loving the product); they are funding "go-to-market fit" (a repeatable sales machine). If you cannot demonstrate a 3x efficiency ratio (LTV:CAC) and a clear path to £1M+ ARR within 18 months, you will likely fall into the "Series A Gap."
2. Rising Operational and Living Costs
London’s high cost of living and operating expenses pose a significant challenge for early-stage companies, especially as inflation and rising energy costs continue to impact business expenses. Startups can mitigate these financial pressures by seeking funding through schemes like the Seed Enterprise Investment Scheme (SEIS) or Enterprise Investment Scheme (EIS), which attract investors with tax incentives. Additionally, many London-based accelerators, like Techstars and Seedcamp, provide resources and support that can help offset early-stage costs while offering mentorship and investor access.
3. The Liquidity Shift: The Mansion House Compact
A major structural change is unlocking new capital for UK founders. Under the Mansion House Compact and the subsequent Mansion House Accord, 17 of the UK’s largest pension funds, including Aviva, Legal & General, and Phoenix Group, have committed to allocating 5% of their default funds to unlisted equities by 2030.
What this means for Founders:
New Capital Channels: As of October 2025, £1.6 billion has already been deployed into unlisted equities under this scheme.
LIFTS Initiative: The government's "Long-term Investment for Technology and Science" (LIFTS) initiative recently launched a £500m investment vehicle managed by Schroders Capital specifically to funnel pension cash into UK science and tech scale-ups.
The Impact: This capital is designed to plug the "Growth Gap" (Series B+), providing a domestic exit route that prevents successful UK startups from being forced to flip to the US for late-stage funding.
Related Resource: The 12 Best VC Funds You Should Know About
Connect with Investors in London With Visible
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Related Resource: A Quick Overview on VC Fund Structure
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Frequently Asked Questions
What is the average Seed round valuation in London for 2026?
The median pre-money valuation for London Seed rounds has stabilized between £3M and £5M. However, this varies significantly by sector. High-conviction verticals like Vertical AI and Climate Tech often command higher premiums, while generalist SaaS valuations remain compressed. Investors typically demand stronger traction (often £10k+ MRR) to justify these terms compared to previous cycles.
How does SEIS help UK startups raise capital?
The Seed Enterprise Investment Scheme (SEIS) is a critical fundraising lever for London startups. It offers investors 50% initial income tax relief and capital gains exemptions. For founders, obtaining SEIS Advance Assurance is often a prerequisite, as it de-risks the investment and allows you to raise your first £250k on more founder-friendly valuation terms.
Which sectors are London VCs investing in right now?
In 2026, capital deployment in London is highly concentrated in Deep Tech. Vertical AI (specifically in legal, health, and finance) and Climate Tech are seeing the most active deal flow. While FinTech remains a powerhouse ($4.2B invested in 2025), generalist B2B SaaS funding has cooled, with investors prioritizing profitability and retention metrics over "growth at all costs."
How long does it take to raise a Seed round in London?
Founders should anticipate a 6–9 month timeline from initial outreach to wiring funds. Due diligence cycles have lengthened to 4–6 weeks as investors scrutinize unit economics more closely. Additionally, securing HMRC Advance Assurance for SEIS/EIS can currently take up to 6 weeks, so founders must start this process early to avoid stalling the close.
What metrics do I need to raise a Series A in London?
The bar for Series A graduation has risen significantly. Investors now expect "Go-to-Market Fit" rather than just product usage. Key benchmarks for a successful London Series A include £1M–£1.5M ARR, year-over-year growth of 2x–3x, and a burn multiple under 2x. You must also demonstrate a clear path to 24 months of runway post-raise.
