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A new wave of tech companies is getting ready to list on the London Stock Exchange in 2025. Experts say it could be the busiest year for IPOs since 2021.
This comes as investors return to growth stocks, supported by a more stable economy and hopes that interest rates will soon fall.
Between 2022 and 2024, IPO activity in the UK slowed down. But at least five British tech firms now plan to go public later this year. These companies work in areas like AI, fintech, and green software.
Analysts say this reflects growing confidence, as firms respond to better market conditions and rising interest from investors.
In This Guide
Market Activity Shows Signs of Recovery
The IPO market in London slowed sharply after the post-pandemic boom. High inflation, rising interest rates, and global uncertainty led many companies to delay their plans. But with inflation easing and the Bank of England expected to lower rates later this year, markets are slowly opening up again.
This has created space for ambitious tech firms to raise new funds and expand. The FTSE TechMARK index, which tracks UK-listed tech companies, has risen over 9% so far in 2025. That gain reflects renewed interest in technology-focused businesses.
Key Companies Planning to List
Several high-profile UK tech companies are preparing to go public in 2025. Here are three to watch:
- Synova Systems: An AI-driven healthcare analytics firm founded in 2018 and backed by Octopus Ventures. Synova builds tools that help NHS trusts manage resources more efficiently. The company is aiming for a valuation above £700 million.
- Greentide Technologies: A sustainable cloud computing company helping large data centres reduce emissions. Greentide collaborates with major European clients and partners like AWS and Microsoft Azure. It’s viewed as a standout British firm blending clean energy with enterprise tech.
- LoopPay: A payments platform focused on small businesses. LoopPay enables embedded payments and plans to use IPO proceeds to expand into Eastern Europe and the Middle East.
Why This Matters for UK Investors
IPO opportunities let retail investors buy into companies at the start of their public journey. Though early IPO shares can rise or fall quickly, they give investors rare exposure to industries like AI and green tech, areas not often seen in the FTSE 100. This includes artificial intelligence, sustainable tech, and cloud software.
London has often struggled to attract fast-moving digital firms. Many choose to list in New York instead. But a strong showing in 2025 could help turn that around and restore confidence in the London Stock Exchange as a platform for tech growth.
This matters for long-term savers too. Investors using tax-efficient wrappers such as ISAs or SIPPs may see these IPOs as a way to add variety beyond traditional stocks like banks, oil companies, or supermarkets. Some brokers, including Hargreaves Lansdown and Interactive Investor, offer IPO access to their clients. But demand is usually high and shares are often limited.
Cautious Optimism Among Experts as UK IPO Valuations Stabilise
Financial experts view the return of tech IPOs as a positive sign, though many urge caution. Richard Lambert, an equity strategist at a UK investment firm, notes that “investors are showing interest again. However, the interest is only in businesses with real customers, real revenue, and a clear path to profit. The days of hype alone are behind us.”
Lambert adds that UK listings are now being priced more sensibly compared to the US. That may help new listings perform more steadily and build trust with investors over time.
Risks Still Remain
Even with growing excitement, IPOs are not without risk. Some of the companies preparing to float are still not profitable. Valuations are based on future growth rather than current earnings. As a result, share prices can move sharply in the first few weeks of trading.
Politics may also play a role. With a general election likely this year, any shifts in tax or regulation could affect investor sentiment and company decisions.
Still, IPOs give a good sense of how much confidence there is in the broader economy. If 2025’s tech listings do well, it may encourage other founders to bring their businesses to the public market in London.
Implications for UK Investors
This year’s tech IPO pipeline gives UK investors a rare chance to get involved early with some of the country’s most promising firms. While not every listing will succeed, a measured approach could help long-term portfolios grow in new directions.
For the London market, these IPOs offer more than just new listings. They are a test of whether the UK can support and keep its homegrown tech talent. If these companies choose to stay and thrive, it could help shift the balance away from older industries and towards the future economy.
Watch for updates in the coming months as prospectuses are released and valuations confirmed. The success of these IPOs could mark a turning point, not just for the companies involved, but for London’s future as a global tech listing hub.
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