Ages of UK Startup Founders That Raised Series A & B – 2025
Over the last 12 months, 228 UK startups have raised Series A and B funding, securing millions to scale their businesses. But who are the founders leading these companies? How old are they when they secure investment? Are younger entrepreneurs gaining traction, or is experience still king? We analyzed the data to uncover key trends in founder age, industry variations, regional differences, and funding behaviours.
Key Findings
1. The Average Age of Founders Raising Series A & B
Contrary to the myth of the 20-something entrepreneur, our analysis found that:
- The average age of founders raising Series A is 42.7 years old, with ages ranging from 23 to 67.
- The average age of founders raising Series B is 44.7 years old, with the oldest founder securing funding at 74 years old.
- The most common founder age among those raising funding was 34 years old, indicating a concentration of fundraising success in the mid-30s.
- Only 5% of founders raising Series A/B were under 30 years old.
This suggests that by the time founders reach Series A and B funding, they have likely accumulated years of experience, industry knowledge, and networks that help them scale their businesses.
2. Average Founder Age by Industry
The average age of founders varies significantly by sector:
- AI & Fintech: Founders raising Series A have an average age of 38, while those at Series B average 40.
- Biotech & Healthtech: Founders at Series A average 47, increasing to 50 at Series B.
- Deep Tech & Hardware: The average age of founders raising Series A is 45, rising to 48 at Series B.
- Consumer & E-commerce: Founders are generally younger, with Series A founders averaging 36 and Series B founders averaging 39.
- SaaS & B2B Tech: The average age at Series A is 41, while at Series B, it increases to 43.
These trends highlight that sectors requiring deep expertise, such as biotech and deep tech, tend to have older founders, while consumer and fintech sectors attract younger entrepreneurs.
3. Time from Founding to Series A by Industry
On average, startups took 4.9 years from founding to raising Series A, but this varies by industry:
- AI & Fintech: The shortest timeline, averaging 3.8 years.
- Consumer & E-commerce: Typically raise Series A within 4.2 years.
- SaaS & B2B Tech: Average 4.8 years to Series A.
- Biotech & Healthtech: The longest timeline, averaging 6.3 years due to research and regulatory hurdles.
- Deep Tech & Hardware: Typically take 5.7 years to reach Series A.
This indicates that industries with heavy R&D requirements, such as biotech and deep tech, take significantly longer to reach Series A compared to software-driven industries like fintech and SaaS.
AI & Fintech
Consumer & Ecommerce
Deep Tech & Hardware
SaaS & B2B Tech
Biotech & Healthtech
4. Who Are the Youngest & Oldest Founders?
- The youngest founder to raise Series A/B was 23 years old, working in the fintech sector.
- The oldest founder to raise Series B was 74 years old, in the medical technology industry.
- Founders in their 50s and 60s were most commonly seen in biotech and deep tech industries.
This range highlights that successful fundraising isn’t restricted to a specific age bracket—entrepreneurs of all ages are securing venture capital.
5. The Age Distribution of UK Founders
Looking at the distribution of founder ages, we found that:
- The largest group of founders securing Series A/B falls within the 30-39 age bracket (44%).
- Founders aged 40-49 make up 28% of the dataset, reinforcing the prevalence of mid-career professionals in startup funding.
- Founders under 30 make up just 5%, reinforcing the difficulty of securing venture funding at an early career stage.
- 11% of founders were over 50, showing that experience remains a crucial asset in fundraising.
6. Single vs. Multi-Founder Startups: Does Team Size Affect Age?
- Startups with a single founder tend to raise funding at an average age of 44.3 years.
- Multi-founder startups tend to raise funding at a slightly younger average age of 42.5 years.
- The youngest solo founder in our dataset was 27, while the youngest multi-founder team included a 23-year-old.
- Multi-founder startups raising Series B funding are more likely to include at least one founder over 40.
7. Regional Variations in Founder Age
The data also revealed location-based differences in founder age:
- London-based founders tend to secure Series A/B at a younger age, with an average age of 40.2 years.
- In regional hubs like Cambridge, Oxford, and Edinburgh, the average founder age is 47 years, likely due to the prevalence of research-driven startups in biotech and deep tech.
- The youngest startup founders outside of London were in Manchester and Bristol, both tech-heavy regions.
Conclusion
This analysis challenges the stereotype of the young, hoodie-wearing tech founder raising millions straight out of university. In reality, the majority of UK founders securing Series A/B funding are in their 40s, bringing significant industry experience to the table.
Younger founders are making their mark in high-growth sectors like AI and fintech, but the data suggests that experience remains a crucial factor in successfully scaling a business. Whether in their 20s or their 70s, founders across all ages continue to raise capital, proving that entrepreneurship isn’t about youth—it’s about execution and expertise.
About This Report
This report is based on an analysis of 228 UK startups that raised Series A or B funding in the past 12 months (between January 26th 2024 and January 26th 2025). We were able to find data on the founder’s age / date of birth for 144 out of the 228 startups. For further insights or to discuss the findings, please get in touch.
