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Best Investing Platforms For Startups in the UK
Ruby Layram
19th Sep 2025
If you want to put money behind new UK companies instead of just stocks or funds, there are several platforms that let you do this. But startup investing is high risk, high reward and the platform you pick can make a huge difference. Here are five strong players in the UK startup equity scene, along with what makes each shine (and what to be cautious about).
What to Look for Before Choosing a Startup Platform
Before diving into the platforms themselves, here are the key factors you should check:
- Tax reliefs (SEIS & EIS): these can make or break returns; they cushion losses heavily.
- Due diligence & vetting: how carefully does the platform screen its companies?
- Secondary market or liquidity: can you exit or sell your stake, and how easily?
- Fees: platform fees, success fees, investor fees.
- Minimum investment size: how much capital is needed to get started.
- Support tools & investor protection: legal support, valuations, investor updates, etc.
1. Republic Europe
Republic Europe (previously Seedrs) is one of the UK’s leading equity crowdfunding platforms. It’s FCA-regulated, well-known, and offers many startup investment opportunities.
What’s good about it:
- Strong track record with many deals done and good variety of sectors.
- Offers a secondary market, so you may be able to sell your shares later instead of being locked in.
- Many of the offerings are SEIS/EIS eligible (which gives big tax incentives) for UK investors.
Also read: Best tax-efficient investments in the UK
What’s less good:
- Because it’s popular, many rounds are over-subscribed quickly. That means you might have to act fast and carefully pick which startup you get into.
- Fees can eat into returns. For startups raising funds, success fees and commission percentages vary.
2. Crowdcube
Crowdcube is another popular UK equity crowdfunding platform. Many small companies use it to raise early-stage or scaling capital. It also supports both equity and occasional debt or hybrid models.
What’s good about it:
- Large investor community. That means more deals, more visibility.
- Low minimum investments in many cases. Some rounds let you participate from relatively small amounts.
What’s not so good:
- Crowdcube doesn’t always offer a built-in secondary market for all investments (so you might be locked in until a major event or exit).
- Due diligence can vary startup to startup; the screening isn’t always deep. You’ll need to do your homework.
- Fees for the startups are generally higher, and investor fees or platform fees may cut into small early gains.
3. Angel’s Den
Angel’s Den is more of an angel investor matching platform. It offers pre-vetted SME and early startup deals, often with more curated selection.
What’s good about it:
- More curated deals, less “spray and pray”. If they select a business, chances are they’ve done more screening.
- Investor community has access to pitches and some one-on-one matching. You often get more information and sometimes more control over investment terms.
- Good platform for those wanting a more “angel investor” feel, rather than just crowdfunding.
What’s less good:
- Higher minimums or expectations; you may need to commit more capital.
- Less public/open campaigns compared to broad crowdfunding platforms, fewer choices, less frequency.
- Liquidity tends to be more limited; fewer secondary market options.
4. SyndicateRoom
SyndicateRoom combines elements of angel investing and crowdfunding. They often allow co-investment (joining with professional angels) and sometimes act as lead investors.
What’s good about it:
- Co-investment means you benefit from the expertise of angels/VCs; more likely access to deeper due diligence.
- Some deals come with SEIS/EIS eligibility.
- Good platform if you want to invest in slightly more mature startups (so potentially lower risk than seed rounds).
What’s less good:
- Often fewer deals than Seedrs / Crowdcube (less frequent rounds).
- Investment size is generally higher; less suitable if you want to invest very small amounts.
- Liquidity & exit risk similar to most startup investments (likely a long horizon).
5. Eureeca
Eureeca is a smaller, global SME/venture fundraising platform. Though it has a presence in the UK, it also connects investors internationally. It allows individuals to invest in growth businesses.
What’s good about it:
- Access to international startups gives you diversification beyond UK-only risk.
- Average investment sizes are higher, which means more serious companies (often later stage) get on the platform.
- Global network of investors means more exposure to different business models.
What’s less good:
- International exposure brings additional risks: regulatory differences, currency risk, less familiarity with some foreign jurisdictions.
- May have fewer SEIS/EIS eligible options for UK tax relief (depending on where the startup is based).
- Minimum investments tend to be higher, and because deals are more international, follow-on support and information may be less frequent or transparent.
Which Platform Fits Your Investment Style
Here’s a quick guide to matching a platform to what you want:
| Your Priority | Best Platforms |
|---|---|
| Want maximum tax relief & wide deal flow (seed-stage) | Republic Europe or Crowdcube, particularly for SEIS/EIS deals |
| Prefer curated, higher quality startups | Angels Den or SyndicateRoom |
| Want international exposure | Eureeca |
| Want low minimum entry and ease of use | Crowdcube or Republic Europe |
| Want exit options / liquidity | Republic Europe (secondary market) might give you some flexibility |
Risks to Be Aware Of
- Startup failure is the norm: many early companies don’t make it, so expect losses; only invest money you can afford to lose.
- Valuations may be frothy: in popular rounds sometimes you overpay; later downside is steep.
- Illiquidity: even if there’s a secondary market, it may be limited or expensive; exits often take many years.
- Paperwork & tax relief complexity: claiming SEIS/EIS requires correct documentation; if you mess that up, you may lose benefits.
Final Thoughts
If you’re serious about backing startup companies, either for potential big upside or because you want to support innovation, the UK offers a strong ecosystem.
Republic Europe and Crowdcube are your go-tos for deal flow and tax relief. Angels Den and SyndicateRoom paste a more curated seal over quality. Eureeca gives you a way to diversify internationally.
Your best move? Spread your bets (both across startups and across platforms), be rigorous on due diligence, take advantage of SEIS/EIS, and treat startup investing as a high-risk slice of your total portfolio (perhaps 5-10% if you’re aggressive). If one of them wins big, it can more than cover the losers.
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Disclaimer: MoneyMagpie is not a licensed financial advisor and therefore information found here, including opinions, commentary, suggestions or strategies, are for informational, entertainment or educational purposes only. This should not be considered as financial advice. Anyone thinking of investing should conduct their own due diligence. When investing your capital is at risk.
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