In 2025, the UK investment market has experienced multiple down rounds, including from The Hut Group and Atom Bank, whilst stock trading app Freetrade, which saw its value slashed by 65% in 2023, recently exited via acquisition.

This analysis examines which companies are bucking these trends and securing the highest valuations.

Top Ten Most Valuable UK Companies

10. Paddle
Founded: 2012 | Base: Islington | Sector: Payment Processing | Valuation: £941m
Paddle provides payment software supporting businesses with invoicing, payment processing, currency exchange, and customer analytics.

Since 2013, the company has raised £252m across eight equity rounds. The most recent round in July 2025 raised $25.0m from CIBC Innovation Banking and other investors, whilst a $200m round in May 2022 established a £941m post-money valuation.
2023 turnover reached £57.3m, up from £49.0m the previous year.

9. Zopa
Founded: 2017 | Base: Southwark | Sector: Banking | Valuation: £987m
Zopa operates a digital bank offering personal loans, credit cards, and car financing services.
Since 2006, the company has raised £805m across 16 equity rounds. The latest round in March 2025 secured £80.0m from undisclosed investors, establishing a £987m post-money valuation. Earlier fundraisings include £220m (2021, SoftBank Vision Fund and Augmentum Fintech) and £140m (2020).
2024 turnover reached £299m, up from £224m in 2023.

8. LNT Care Developments
Founded: 2021 | Base: Leeds | Sector: Property Development and Construction | Valuation: £1.18bn
LNT Care Developments operates across the care sector, spanning care home construction and development alongside individual centre management. The company also runs divisions in motorsport and weather protection product development.

In July 2025, it raised £98.6m from undisclosed investors, establishing a £1.18bn post-money valuation.

7. Quantexa
Founded: 2016 | Base: Tower Hamlets | Sector: Risk and Compliance | Valuation: £1.30bn
Quantexa develops an AI-powered software platform providing data management and risk analysis services.
Since 2017, the company has raised £421m across six equity rounds. The latest round in March 2025 raised $175m, backed by AlbionVC, British Patient Capital, and Teachers' Venture Growth, establishing a £1.30bn post-money valuation.
2024 turnover reached £76.1m, up from £57.9m in 2023.

6. Isomorphic Labs
Founded: 2021 | Base: Tower Hamlets | Sector: Biotechnology | Valuation: £1.39bn
Isomorphic Labs develops a drug design platform using AI models to support pharmaceutical development.
The company spun out from Google in February 2021 and is wholly owned by Isomorphic Holdings LLC. In March 2025, it raised $600m backed by Alphabet, GV (Google Ventures), and Thrive Capital, establishing a £1.39bn post-money valuation.

5. Synthesia
Founded: 2017 | Base: Camden | Sector: Marketing, Branding, and Advertising | Valuation: £1.45bn
Synthesia develops AI technology enabling businesses to generate video content by modelling the human face in motion.

A University College London spinout (2018), the company has raised £266m across seven equity rounds. The most recent round in December 2024 raised £146m, backed by Atlassian Ventures, Firstmark Capital, GV (Google Ventures), MMC Ventures, NEA, PSP Growth, and World Innovation Lab, establishing a £1.45bn post-money valuation.
2023 turnover reached £25.7m.

4. CMR Surgical
Founded: 2014 | Base: South Cambridgeshire | Sector: Robotics | Valuation: £1.92bn
CMR Surgical develops robotic medical devices for surgical procedures whilst providing a surgical data platform.

Since 2014, the company has raised over £1.03bn across nine equity rounds. The most recent round in April 2025 raised £154m, backed by Ally Bridge Group, LGT Capital Partners, Lightrock, SoftBank Vision Fund, Tencent, and Trinity Capital, establishing a £1.92bn post-money valuation.

3. Wayve
Founded: 2017 | Base: Islington | Sector: Autonomous Vehicles | Valuation: £2.22bn
Wayve develops software for self-driving cars, using artificial intelligence and machine learning to support autonomous vehicle systems.

Since 2017, the company has raised £1.01bn across seven equity rounds. The latest round in February 2024 secured $1.05bn, backed by M12, NVIDIA, and SoftBank Vision Fund, establishing a £2.22bn post-money valuation.

2. Inspired
Founded: 2016 | Base: Westminster | Sector: Schools | Valuation: £2.88bn
Inspired operates a global group of independent private schools. Since 2016, the company has raised £493m across six equity rounds.

Recent activity includes a small round in May 2024, whilst earlier raises include €150m (2022, Stonepeak Infrastructure Partners) and €240m (2019, TA Associates and Warburg Pincus). Inspired's most recently reported post-money valuation is £2.88bn.
2024 turnover reached £931m, up from £720m in 2023.

1. CityFibre
Founded: 2018 | Base: Westminster | Sector: Telecommunications Infrastructure | Valuation: £3.00bn
CityFibre installs fibre optic infrastructure for communications across the UK. The company listed on AIM in 2014, raising £16.6m at admission.

Since then, it has secured £2.02bn across five equity rounds. The most recent round in June 2025 raised £500m, backed by Antin Infrastructure Partners, Goldman Sachs Alternatives, Interogo, and Mubadala Investment Company, establishing a £3.00bn post-money valuation.

GS Verde Group: Valuation Excellence and Corporate Advisory

At GS Verde Group, we help businesses achieve value and long-term success by offering corporate advisory expertise all under one roof.

Our corporate finance team works together with our tax, accountancy, and legal experts to provide low-risk, thorough valuation and due diligence processes so that clients can achieve long-term growth with clarity and confidence.

Discover how our corporate finance team can enhance your business's valuation:
Welcome to GS Verde Corporate Finance

Further insights: Explore Britain's most valuable companies at: https://www.beauhurst.com/blog/top-companies-uk/