Top Cambridge deep tech investors writing checks in 2026

16 investors are actively backing Cambridge deep tech companies in 2026. IQ Capital raised $400M across Fund IV and Growth Fund II. CIC's £100M opportunity fund is actively deploying. Nu Quantum closed a $60M Series A in December 2025. Here's who's writing checks.

Cambridge raised $2.3B in deep tech VC in 2024, nearly double the $1.2B raised in 2023. The city hosts nearly 700 deep tech and life science startups. 78% of Cambridge deep tech spinouts reach Series B, above the 63% European average.

IQ Capital manages $1B+ in AUM. Riverlane raised $75M Series C in 2024. Pragmatic Semiconductor raised £182M Series D in 2023. The Cambridge deep tech ecosystem is past early-stage.

Cambridge Tech Week 2026 runs 14-18 September. Deeptech Labs has invested in 24 companies over five years. The Cambridge ecosystem is worth £176B and generates £23B in economic interest from research.

Set up an Ellty data room with your proof-of-concept data, IP documentation, and cap table. Cambridge deep tech VCs ask for technical evidence within 48 hours of first contact.

What is a Cambridge deep tech investor?

A Cambridge deep tech investor backs companies in quantum, semiconductors, robotics, advanced materials, or AI with ties to Cambridge research. They differ from generalist VCs by expecting proof-of-concept data and university IP resolved before seed close.

Cambridge deep tech investors access University of Cambridge spinout deal flow via CIC, Cambridge Enterprise, and Deeptech Labs. The combination of ARM partnership, university infrastructure, and patient capital is unique in the UK.

Typical checks range from £30K at Cambridge Enterprise to £20M at CIC's opportunity fund. Deeptech Labs bridges post-seed to Series A with £350K plus network access.

Check how Cambridge AI investors differ if you're building at the software edge. Many Cambridge deep tech VCs co-invest on the same rounds across AI and hardware.

16 Cambridge deep tech investors

1. IQ Capital

IQ Capital is Cambridge's most active deep tech VC with $1B+ in AUM across Fund IV ($200M) and Growth Fund II ($200M). They co-led Nu Quantum's $60M Series A in December 2025 alongside Amadeus Capital. They secured a £50M cornerstone from the British Business Bank for Fund V in January 2026. IQ Capital backs AI, robotics, semiconductors, quantum, and energy tech from Cambridge.

Set up an Ellty data room with your proof-of-concept data, IP assignments, and financial model before approaching IQ Capital. They run rigorous technical due diligence before any investment decision.

• Recent Deals: Nu Quantum $60M Series A co-lead (December 2025); Ai Build Series A; Fund V BBB £50M cornerstone (January 2026); $400M raised across Fund IV and Growth Fund II
• LinkedIn: IQ Capital LinkedIn
• Sector Focus: AI, robotics, semiconductors, quantum, energy tech
• Stage Focus: Seed to Series A + growth
• Location: Cambridge and London
• Website: iqcapital.vc

2. Cambridge Innovation Capital

Cambridge Innovation Capital manages £600M+ across multiple funds and launched a £100M opportunity fund in February 2025. Their first two investments from the new fund were Pragmatic Semiconductor and Riverlane. CIC committed £100M+ to University of Cambridge spinouts in August 2025 with a new EIR programme. They back AI, semiconductors, quantum, and deep tech from seed to Series B.

• Recent Deals: Pragmatic Semiconductor (Fund III first investment); Riverlane $75M Series C (existing investor); BeyondMath $18.5M seed (February 2026); £100M opportunity fund (February 2025)
• LinkedIn: Cambridge Innovation Capital LinkedIn
• Sector Focus: Quantum, semiconductors, AI, deep tech, life sciences
• Stage Focus: Seed to Series B + growth
• Location: Cambridge, UK
• Website: cic.vc

3. Deeptech Labs

Deeptech Labs is a Cambridge-based VC accelerator backed by ARM, Cambridge Innovation Capital, Martlet Capital, and the University of Cambridge. They invest £350K into five post-seed deep tech companies per cohort to bridge seed to Series A. They have invested in 24 companies over five years. Deeptech Labs is the right programme for Cambridge founders with a seed round closed and a clear path to Series A.

• Recent Deals: 24 portfolio companies over 5 years; £350K per company; 2025 cohort active; ARM and CIC-backed programme
• LinkedIn: Deeptech Labs LinkedIn
• Sector Focus: Cambridge deep tech, post-seed to Series A
• Stage Focus: Post-seed
• Location: Cambridge, UK
• Website: dtl.vc

4. Amadeus Capital Partners

Amadeus Capital Partners manages $1.3B+ and was co-founded by Hermann Hauser (ARM co-founder). They co-led Nu Quantum's $60M Series A in December 2025 alongside IQ Capital. Their deep tech portfolio spans AI, quantum, advanced computing, robotics, and energy. Amadeus attends Cambridge Tech Week and co-invests with IQ Capital and CIC on Cambridge spinout rounds.

• Recent Deals: Nu Quantum $60M Series A co-lead (December 2025); PolyAI $86M Series D (December 2025); Cambridge Tech Week presence; $1.3B+ AUM
• LinkedIn: Amadeus Capital Partners LinkedIn
• Sector Focus: AI, quantum, advanced computing, robotics, energy
• Stage Focus: Seed to Series C
• Location: Cambridge and London
• Website: amadeuscapital.com

5. Parkwalk Advisors

Parkwalk Advisors manages £450M+ in AUM and is the most active investor in UK deep tech university spinouts. They backed the Molyon seed round (Li-S batteries, 2024) alongside Cambridge Enterprise Ventures. Their Cambridge-specific EIS fund backs pre-seed to Series A spinouts across deep tech, quantum, and AI. Parkwalk co-invests with CIC, IP Group, and IQ Capital.

• Recent Deals: Molyon seed (2024, with Cambridge Enterprise); AccelerComm $15M lead (June 2025); 41 spinout deals in 2024; £450M+ AUM
• LinkedIn: Parkwalk Advisors LinkedIn
• Sector Focus: Cambridge deep tech, quantum, life sciences, EIS-eligible
• Stage Focus: Pre-seed to Series A
• Location: London with Cambridge focus
• Website: parkwalk.vc

6. ET Capital

ET Capital launched the Cambridge Venture Index SEIS/EIS Fund 2 (CVIF2) in April 2026 to back up to 20 early-stage science-led startups from Cambridge and Oxford. Their first fund (CVIF1) deployed into up to ten companies sourced from Cambridge Enterprise, Deep Tech Labs, Start Codon, and o2h. They take an index-style diversified approach to reduce risk across early-stage deep tech. ET Capital is the right first capital for Cambridge science founders who want broad-based seed investment.

• Recent Deals: Cambridge Venture Index Fund 2 launch (April 2026); Fund 1 deployed in Cambridge/Oxford startups; Reo Tx and Cellestial Health investments
• LinkedIn: ET Capital LinkedIn
• Sector Focus: Cambridge and Oxford science-led deep tech, SEIS/EIS eligible
• Stage Focus: Pre-seed to seed
• Location: Cambridge, UK
• Website: etcapital.com

7. EMV Capital

EMV Capital acquired Martlet Capital's operational business in 2024 and now manages the Martlet Capital £23.3M portfolio across 53 deep tech companies. The combined portfolio includes Paragraf, Nu Quantum, Xampla, and Cambridge GaN Devices. EMV Capital is an active early-stage investor in Cambridge deep tech founders from the university Computer Lab, Engineering, and Physics departments. They are the strongest early-stage alternative to Deeptech Labs in the Cambridge ecosystem.

• Recent Deals: Martlet Capital acquisition (2024); Paragraf graphene electronics portfolio; Nu Quantum portfolio; 53 companies across deep tech and life sciences
• LinkedIn: EMV Capital LinkedIn
• Sector Focus: Cambridge deep tech, advanced materials, AI, life sciences
• Stage Focus: Pre-seed to seed
• Location: Cambridge, UK
• Website: emvcapital.com

8. Cambridge Enterprise Ventures

Cambridge Enterprise Ventures is the University of Cambridge's own venture fund. Their START 3.0 programme invests £30K per company with no equity taken until external raise. They backed Tenyks ($3.4M seed, 2026) and the Molyon seed round alongside Parkwalk. Cambridge Enterprise recently received an additional £30M capital commitment to bring CEV to £100M AUM.

Read the due diligence process guide before applying to Cambridge Enterprise. University venture funds expect the same documentation as commercial VCs.

• Recent Deals: Tenyks $3.4M seed (2026); Molyon seed (2024); START 3.0 active; £30M additional capital bringing CEV to £100M AUM
• LinkedIn: Cambridge Enterprise LinkedIn
• Sector Focus: University of Cambridge deep tech, AI, quantum, biotech spinouts
• Stage Focus: Pre-seed
• Location: Cambridge, UK
• Website: enterprise.cam.ac.uk

9. National Security Strategic Investment Fund

The National Security Strategic Investment Fund (NSSIF) participated in Riverlane's $75M Series C in 2024 alongside CIC and Amadeus. They back quantum computing, defence, and national security deep tech companies. NSSIF is a UK government fund investing in technologies with national security applications. Cambridge deep tech founders in quantum, cryptography, sensors, or dual-use technology should approach NSSIF early.

Use Ellty to manage NSSIF due diligence documentation. Government-backed deep tech investors require strict IP and security clearance documentation.

• Recent Deals: Riverlane $75M Series C participant (2024); quantum computing and defence portfolio; dual-use technology mandate
• LinkedIn: NSSIF LinkedIn
• Sector Focus: Quantum, defence, national security, dual-use deep tech
• Stage Focus: Seed to growth
• Location: London with Cambridge deal flow
• Website: nssif.co.uk

10. IP Group

IP Group manages Parkwalk Advisors (acquired 2017) and co-invests alongside CIC on Cambridge deep tech rounds. They backed AccelerComm's $15M alongside Parkwalk in June 2025. Their Cambridge portfolio spans quantum, semiconductors, AI, and life sciences. IP Group is a structural investor in the Cambridge ecosystem via Parkwalk, with exposure across every major Cambridge deep tech round.

• Recent Deals: AccelerComm $15M co-lead (June 2025); Parkwalk parent company; Cambridge deep tech spinout portfolio
• LinkedIn: IP Group LinkedIn
• Sector Focus: Cambridge deep tech, quantum, semiconductors, AI
• Stage Focus: Seed to growth
• Location: London with Cambridge focus
• Website: ipgroupplc.com

11. Balderton Capital

Balderton Capital invests exclusively in European tech at seed to Series B with active Cambridge deal flow. They back AI infrastructure, deep tech, and AI-enabled SaaS companies. Balderton attends Cambridge Tech Week and co-invests alongside IQ Capital and Amadeus on Cambridge rounds. Cambridge deep tech founders seeking a Series A with a pan-European generalist VC should include Balderton.

• Recent Deals: Tilt Series A (June 2026); European AI and deep tech mandate; Cambridge Tech Week presence; seed to Series B focus
• LinkedIn: Balderton Capital LinkedIn
• Sector Focus: European AI, deep tech, B2B software
• Stage Focus: Seed to Series B
• Location: London with UK-wide deal flow
• Website: balderton.com

12. Octopus Ventures

Octopus Ventures made 18 investments in 2025 and has a dedicated £40M deep tech pre-seed fund. They back Cambridge deep tech companies at seed and Series A across AI, health, and hardware. Their portfolio includes Automata, CoMind, and Rekord. Cambridge deep tech founders building AI-hardware products or advanced diagnostics should include Octopus in their seed process.

• Recent Deals: 18 investments in 2025; £40M deep tech pre-seed fund; Automata and CoMind portfolio; Infinitopes investment (January 2026)
• LinkedIn: Octopus Ventures LinkedIn
• Sector Focus: Deep tech, AI, health, robotics, advanced computing
• Stage Focus: Pre-seed to growth
• Location: London with Cambridge deal flow
• Website: octopusventures.com

13. Planet First Partners

Planet First Partners led Riverlane's $75M Series C in 2024 alongside ETF Partners. They back climate and quantum deep tech companies at Series B and beyond. Cambridge deep tech founders building in quantum error correction, advanced materials, or climate hardware should approach Planet First Partners at growth stage. They are the most active growth-stage quantum investor in the Cambridge ecosystem.

• Recent Deals: Riverlane $75M Series C lead (2024); climate and quantum portfolio; Series B+ focus
• LinkedIn: Planet First Partners LinkedIn
• Sector Focus: Quantum, climate tech, advanced materials, deep tech
• Stage Focus: Series B to growth
• Location: London with Cambridge deal flow
• Website: planetfirstpartners.com

14. Molten Ventures

Molten Ventures backs early-stage European AI and deep tech companies at seed and Series A. They co-invest with Amadeus Capital and IQ Capital on Cambridge rounds. Their portfolio includes AI-first companies and data infrastructure tools relevant to the Cambridge ecosystem. Cambridge deep tech founders building enterprise AI products should include Molten alongside Notion Capital.

Read about how to prepare for due diligence before managing simultaneous outreach to Molten, Balderton, and IQ Capital. Sequencing your Cambridge raise takes careful pipeline management.

• Recent Deals: European deep tech and AI mandate; Cambridge co-investment with IQ Capital; seed and Series A focus
• LinkedIn: Molten Ventures LinkedIn
• Sector Focus: AI, deep tech, SaaS, data infrastructure
• Stage Focus: Seed to Series A
• Location: London with UK-wide deal flow
• Website: moltenventures.com

15. Entrepreneur First

Entrepreneur First invests in exceptional deep tech individuals before they have a co-founder or idea. Their London cohort regularly includes Cambridge researchers and graduates. They invest £10K to £80K pre-formation before raising a seed round once the team and idea are validated. Cambridge deep tech researchers who want to build a company but don't yet have a co-founder should apply to EF first.

• Recent Deals: Active London and global cohorts 2025-2026; Cambridge talent in every cohort; pre-formation deep tech investment
• LinkedIn: Entrepreneur First LinkedIn
• Sector Focus: Deep tech founders, AI, pre-company formation
• Stage Focus: Pre-formation to seed
• Location: London with Cambridge talent pipeline
• Website: joinef.com

16. British Business Bank

The British Business Bank backed IQ Capital Fund V with a £50M cornerstone in January 2026. They also committed £20M to CIC's Opportunity Fund in February 2025. The BBB enables several Cambridge deep tech funds to operate at scale through LP commitments. They are the most important structural funder in the Cambridge deep tech ecosystem.

• Recent Deals: IQ Capital Fund V £50M cornerstone (January 2026); CIC Opportunity Fund £20M (February 2025); UK-wide deep tech LP mandate
• LinkedIn: British Business Bank LinkedIn
• Sector Focus: UK deep tech, innovation, national growth sectors
• Stage Focus: Fund LP (not direct)
• Location: Sheffield with UK-wide coverage
• Website: british-business-bank.co.uk

How Cambridge deep tech due diligence works

Cambridge deep tech due diligence starts earlier than other sectors. IQ Capital and Amadeus begin technical reviews at first meeting - they bring in domain experts before term sheets. Some don't proceed past first technical review.

Unlike software VCs, Cambridge deep tech investors check IP ownership, patent status, and university licensing agreements. Unresolved co-inventor conflicts or unclear commercialisation rights will kill a round faster than poor financials.

Most Cambridge deep tech VCs run 3-stage processes: technical review, commercial assessment, and term sheet. Rarely do all three happen in under 90 days. Don't count on a quick close.

Use Ellty to share your technical documentation with investors. Track who opens your proof-of-concept section before spending time on follow-up calls.

Where to meet Cambridge deep tech investors

Cambridge Tech Week (September 14-18, 2026) is the single most important event for meeting deep tech VCs. IQ Capital, CIC, Amadeus, and Parkwalk all send partners and attend founder pitches.

The University of Cambridge Founders' Investor Day (annual, backed by AstraZeneca and HSBC Innovation Banking) connects 50+ companies with investor panels. Deeptech Labs alumni are featured every year.

Deep Tech Nation hosts the Cambridge Innovation Index report and runs community events where IQ Capital and Deeptech Labs founders and investors mix informally. It's the fastest route to a warm intro from the technical community.

How to verify a Cambridge deep tech fund is still deploying

Check the fund's portfolio page for deals closed in the last 12 months. No new announced deals in 18 months means the fund is likely between vintages.

IQ Capital, CIC, Amadeus, and Parkwalk are confirmed active in 2026 with new fund capital from 2025. Deeptech Labs closed its latest cohort in 2025 and will open applications for 2026.

ET Capital's CVIF2 launched in April 2026 and is actively investing in up to 20 companies. Dead portfolio companies with no progress updates are a red flag for any fund.