Investor profile
The SideBySide Partnership
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The SideBySide Partnership is a UK EIS venture capital firm that backs innovative, fast-growing Consumer Tech and B2B Software companies with £1–20 million in revenue that have already commercialised proven technologies and are seeking to expand into mainstream and international markets. The firm invests between £500k and £3m per company, from Pre-Series A to Series B, and takes a concentrated, hands-on approach — applying lessons from personal entrepreneurial and investment experience to provide active mentoring to a limited number of portfolio companies at any one time, ensuring each receives the capital and guidance needed to reach its potential. As the firm states: 'We have recognised that many of the companies that have been successful in this journey are assisted by the active support from those who have been through these growth phases before.'
Notable quotes
“We have recognised that many of the companies that have been successful in this journey are assisted by the active support from those who have been through these growth phases before.”
“Later-stage EIS has emerged as an increasingly attractive segment — combining more established revenue profiles with long-term tax-efficient structuring. We focus on backing UK technology scale-ups with clear product-market fit and disciplined valuation.”
“Last year was a strong year for our portfolio, with record revenues and several highly significant partnerships signed across multiple companies — positioning the portfolio for an even stronger 2026. £602m total GMV (+60% YoY average growth), £6.6m average end-of-year ARR/run-rate, 209% average net revenue growth since 2023.”
Recent investments
| Company | Round | Size | Date |
|---|---|---|---|
| Tonic Health | Series A | $4m | 2025-07-01 |
| Ryft | Series A | $7m | 2025-04-09 |
| Native | Series B | — | 2026 |
| ShotScope | Series B | $9m | 2024-07-31 |
| Slip | Seed | — | 2024-06-06 |
| Laundryheap | Series A | — | 2021-02-22 |
| Envestors | Seed | — | 2020-07-01 |
| Travelnest | unknown | — | — |
| Honest Mobile | unknown | — | — |
| Harper | unknown | — | — |
Frequent co-investors
| VC firm | Deals together |
|---|---|
| EdenBase | 1 |
| Guinness Global Investors (Guinness Ventures) | 1 |
| Scottish Enterprise | 1 |
| Equity Gap | 1 |
| Pembroke VCT | 1 |
| Adjuvo | 1 |
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