3 UK Penny Stocks With Market Caps Under £900M To Consider

Simply Wall St

Wed, December 24, 2025 at 2:05 AM EST 4 min read

The London stock market has been under pressure recently, with the FTSE 100 index closing lower following weak trade data from China, highlighting global economic uncertainties. Despite these challenges, investors can still find opportunities by exploring smaller companies that might offer hidden value. While the term “penny stock” may seem outdated, it remains relevant for those interested in investing in smaller or newer firms that demonstrate strong financial health and potential for growth.

Click here to see the full list of 306 stocks from our UK Penny Stocks screener.

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

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

Overview: Optima Health plc offers occupational health and wellbeing services to both public and private sectors in the UK, with a market cap of £175.33 million.

Operations: The company generates revenue of £113.75 million from its occupational health and wellbeing services in the UK.

Market Cap: £175.33M

Optima Health plc, with a market cap of £175.33 million, has shown promising financial performance as a penny stock. The company reported half-year sales of £59.46 million, up from £50.75 million the previous year, and turned a net income of £1.2 million from a prior loss. This profitability shift is notable given its earnings growth forecast of 30.6% annually and significant past earnings growth over five years at 44.2% per annum. While trading below estimated fair value by 29%, Optima’s low return on equity (2.1%) and short-term asset coverage issues are areas to monitor closely for potential investors.

• Jump into the full analysis health report here for a deeper understanding of Optima Health.

• Examine Optima Health’s earnings growth report to understand how analysts expect it to perform.

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

Overview: Peel Hunt Limited operates as an integrated investment bank providing research, distribution, and execution services in the United Kingdom with a market cap of £124.65 million.