UK's Top Insider-Owned Growth Companies In August 2026

In August 2026, the UK market is experiencing some turbulence, with the FTSE 100 index facing pressure due to weak trade data from China and its impact on global demand. Amid these challenges, investors often seek opportunities in growth companies where high insider ownership can signal strong confidence from those closest to the business.

Top 10 Growth Companies With High Insider Ownership In The United Kingdom

Click here to see the full list of 65 stocks from our Fast Growing UK Companies With High Insider Ownership screener.

We'll examine a selection from our screener results.

Cerillion (AIM:CER)

Simply Wall St Growth Rating: ★★★★☆☆

Overview: Cerillion Plc provides software solutions for billing, charging, and customer relationship management to the telecommunications sector across various global regions, with a market cap of £298.36 million.

Operations: The company's revenue is derived from two main segments: Services, contributing £17.84 million, and Software, accounting for £22.57 million.

Insider Ownership: 20.3%

Earnings Growth Forecast: 15.3% p.a.

Cerillion, a growth company in the UK with significant insider ownership, is actively engaging in innovative projects like Agentic AI to enhance CSP operations and revenue. Despite a recent decline in earnings and sales, Cerillion's earnings are forecast to grow faster than the UK market at 15.3% annually. Trading below fair value estimates and with a high forecasted return on equity of 23.8%, it remains an attractive prospect for growth-focused investors despite mixed financial results recently.

• Click to explore a detailed breakdown of our findings in Cerillion's earnings growth report.
• Our expertly prepared valuation report Cerillion implies its share price may be lower than expected.

RWS Holdings (AIM:RWS)

Simply Wall St Growth Rating: ★★★★☆☆

Overview: RWS Holdings plc provides artificial intelligence solutions across the United States, the United Kingdom, continental Europe, and internationally, with a market cap of £410.47 million.

Operations: RWS Holdings generates revenue through its artificial intelligence solutions offered across various regions, including the United States, the United Kingdom, continental Europe, and internationally.

Insider Ownership: 31.2%

Earnings Growth Forecast: 119.5% p.a.

RWS Holdings, with a focus on technological innovation, recently launched services to streamline global clinical trials and updated its Trados Studio with advanced AI features. Despite trading at a significant discount to fair value estimates, the company has experienced volatility in share price and reduced dividends. Forecasts suggest RWS will achieve profitability within three years, outpacing UK market growth. However, its return on equity is expected to remain low at 5.7%.

• Click here to discover the nuances of RWS Holdings with our detailed analytical future growth report.
• Insights from our recent valuation report point to the potential undervaluation of RWS Holdings shares in the market.

Elixirr International (LSE:ELIX)

Simply Wall St Growth Rating: ★★★★☆☆

Overview: Elixirr International plc, with a market cap of £318.11 million, provides management consultancy services through its subsidiaries in the United Kingdom, the United States, and internationally.

Operations: The company's revenue primarily comes from management consulting services, totaling £149.60 million.

Insider Ownership: 38%

Earnings Growth Forecast: 18.1% p.a.

Elixirr International is trading significantly below its estimated fair value, offering potential upside as analysts expect the stock price to rise by 82.1%. The company's earnings are projected to grow at 18.1% annually, outpacing the UK market's growth rate of 11.9%, although revenue growth is moderate at 11.1% per year. Despite a history of unstable dividends, Elixirr maintains strong relative value compared to peers and industry standards without recent substantial insider trading activity.

• Click here and access our complete growth analysis report to understand the dynamics of Elixirr International.
• According our valuation report, there's an indication that Elixirr International's share price might be on the cheaper side.

Key Takeaways

• Take a closer look at our Fast Growing UK Companies With High Insider Ownership list of 65 companies by clicking here.
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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.The analysis only considers stock directly held by insiders. It does not include indirectly owned stock through other vehicles such as corporate and/or trust entities. All forecast revenue and earnings growth rates quoted are in terms of annualised (per annum) growth rates over 1-3 years.

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