Top 216 UK Series A Investors (Free List)

The most active UK Series A investors funding startups with proven traction.

7 min read

💡 This page features the most active UK Series A investors: venture capital firms backing startups that have proven traction and are ready to scale.

Looking for other types of investors? Explore our dedicated lists for angel investors, pre-seed VCs, seed VCs, or browse venture capitalists by sector.

What is Series A funding?

Series A funding is where a startup moves from proving a concept to scaling a business. It’s the point where investors back strong evidence, repeatable revenue, clear product–market fit, and the potential to build something enduring.

The firms below are among the most active Series A investors in the UK. They typically invest in startups that have outgrown the early stage: teams with working products, loyal customers, and data showing traction. A Series A round isn’t about taking a bet on an idea, it’s about accelerating what already works.

Series A investors focus on helping founders professionalise their operations, hire key talent, and expand into new markets. They often lead the first institutional round, set the valuation benchmarks for later stages, and play an active role on the board as the company matures.

This list tracks the UK funds most frequently participating in Series A rounds, the investors shaping the next wave of high-growth British companies.

216 Most Active Series A Investors In The UK

Series A VCs and investors (websites, linkedin and twitter accounts)

VC Firms: 216 /801

Series A VCs	Investment Sector	Location	Funding Round
Ember Partners(3 contacts 🔒) Ember Partners is a venture capital firm focused exclusively on investing i...	Data analyticsSaaSFintechGeneralist	London	Seed Growth
Quantum Light Ventures(more info 🔒)	Data analyticsFintechAIHrtech	London	Seed Growth
Octopus Ventures(14 contacts 🔒) This venture capital firm focuses on investing in sectors such as B2B Softw...	Data analyticsBiotechAISaaS	London	Pre-seed Seed Growth
Redrice Ventures(5 contacts 🔒) Redrice Ventures is a UK-based venture capital firm specialising in premium...	Data analyticsAIHealthtechWellness	London	Seed Growth
Old College Capital(more info 🔒) Old College Capital (OCC) is the University of Edinburgh’s venture investme...	Data analyticsHealthtechBiotechGeneralist	Edingburgh	Seed Growth
One Peak Partners(8 contacts 🔒) One Peak is a venture capital firm that focuses on investing in global soft...	Data analyticsTechAISaaS	London	Growth
Oskare Capital(3 contacts 🔒) Óskare Capital, headquartered in Paris and London, specialises in venture-s...	Data analyticsHealthtechLife ScienceDeeptech	London	Seed Growth
OTIF(7 contacts 🔒) Oxford Technology and Innovations EIS Fund (OTIF) focuses on early-stage, E...	Data analyticsSaaSDeeptechGeneralist	Oxford	Seed Growth
Outrun Ventures(2 contacts 🔒) Building Capital is an angel investment firm focused on supporting FinTech ...	Data analyticsAIFintechRegtech	London	Seed Growth
Outward VC(4 contacts 🔒)	Data analyticsAIFintechInsurtech	London	Pre-seed Seed Growth
Oxford Capital(2 contacts 🔒) Oxford Capital is a venture capital firm based in Oxford, specialising in e...	Data analyticsRegtechFintechInsurtech	London	Pre-seed Seed Growth
Oxford Science Enterprises(1 contacts 🔒) The firm focuses on investing in Life Sciences, Health Tech, and Deep Tech,...	Data analyticsHealthtechCyber securityAI	Oxford	Pre-seed Seed Growth
Mercia Ventures’ North East Venture Fund(1 contacts 🔒) Mercia focuses on investing in innovative SMEs across various sectors inclu...	Data analyticsHealthtechCyber securityEnergy	Henley-in-Arden	Pre-seed Seed Growth
Oxx(6 contacts 🔒) Oxx is a venture capital firm that focuses on investing in B2B SaaS compani...	Data analyticsCyber securityB2BSaaS	London	Seed Growth
Oxford University Innovation(more info 🔒)	Data analyticsBiotechAISaaS	Oxford	Growth