Discover UK Penny Stocks To Watch In September 2026

The UK market has recently faced challenges, with the FTSE 100 index experiencing a downturn due to weak trade data from China, highlighting the interconnectedness of global economies. In such times, investors may look beyond established names to explore opportunities in penny stocks—smaller or newer companies that offer potential growth at an affordable entry point. While the term "penny stocks" might seem outdated, these investments can still provide intriguing possibilities when backed by solid financials and resilience.

Let's review some notable picks from our screened stocks.

B90 Holdings (AIM:B90)

Simply Wall St Financial Health Rating: ★★★★★★

Overview: B90 Holdings PLC, along with its subsidiaries, operates online casino and sports betting platforms in the Isle of Man, with a market cap of £15.87 million.

Operations: The company's revenue is derived from three main segments: Affiliate Marketing Commissions (€6.56 million), Agency (€0.36 million), and White Labelled Online Sportsbook and Casino (€0.23 million).

Market Cap: £15.87M

B90 Holdings PLC, with a market cap of £15.87 million, operates in the iGaming sector and has recently become profitable. The company generates revenue primarily from affiliate marketing commissions (€6.56 million), along with smaller contributions from agency and white-labelled sportsbook operations. B90 is debt-free, which reduces financial risk, and its short-term assets comfortably cover both short- and long-term liabilities. Recent guidance indicates revenues exceeding expectations due to strong core business performance and AI-driven marketing optimisation. Despite trading below estimated fair value, B90's return on equity remains low at 5.5%, suggesting room for improvement in profitability metrics.

• Dive into the specifics of B90 Holdings here with our thorough balance sheet health report.
• Gain insights into B90 Holdings' future direction by reviewing our growth report.

Calnex Solutions (AIM:CLX)

Simply Wall St Financial Health Rating: ★★★★★★

Overview: Calnex Solutions plc designs, produces, and markets test and measurement instrumentation and solutions internationally, with a market cap of £54.17 million.

Operations: The company generates revenue of £21.88 million from its Electronic Test & Measurement Instruments segment.

Market Cap: £54.17M

Calnex Solutions, with a market cap of £54.17 million, operates debt-free and demonstrates financial stability with short-term assets (£24.4M) surpassing both short- (£8.7M) and long-term liabilities (£6.0M). Despite a historical decline in earnings by 42.4% annually over five years, recent performance shows improvement with earnings growing by 116% last year, outpacing the industry average of 46.3%. The management team is experienced, averaging six years in tenure, contributing to high-quality earnings and stable weekly volatility (5%). However, the return on equity remains low at 2.7%, indicating potential areas for profitability enhancement.

• Click here and access our complete financial health analysis report to understand the dynamics of Calnex Solutions.
• Evaluate Calnex Solutions' prospects by accessing our earnings growth report.

Pebble Beach Systems Group (AIM:PEB)

Simply Wall St Financial Health Rating: ★★★★☆☆

Overview: Pebble Beach Systems Group plc specializes in designing, delivering, and supporting playout automation and content management solutions for the broadcast and streaming markets, with a market cap of £31.62 million.

Operations: The company generates revenue of £12.23 million through its focus on playout automation and content management solutions for broadcast and streaming markets.

Market Cap: £31.62M

Pebble Beach Systems Group, with a market cap of £31.62 million, has recently turned profitable and is trading at 29.7% below its estimated fair value, indicating potential undervaluation. Despite past earnings declines averaging 19.3% annually over five years, the company now projects revenue growth of 10% for H1 2026 to £6.5 million. Its short-term assets (£6.1M) fall short of covering liabilities (£10.5M), highlighting liquidity challenges despite improved debt management and positive shareholder equity compared to five years ago. The board's average tenure is 3.5 years, and the management team averages 8.7 years, suggesting experienced leadership amidst high non-cash earnings levels.

• Unlock comprehensive insights into our analysis of Pebble Beach Systems Group stock in this financial health report.
• Examine Pebble Beach Systems Group's earnings growth report to understand how analysts expect it to perform.

Seize The Opportunity

• Explore the 278 names from our UK Penny Stocks screener 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.

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