Three compelling UK small and mid-cap stocks for your portfolio

UK small and mid-cap stocks have been in the shadow of their larger peers, but are beginning to reassert themselves. Since the start of April, the FTSE 250 has outperformed the FTSE 100 by around 6% – a notable development given ongoing macroeconomic and political uncertainty. Investors are increasingly recognising the opportunity, particularly as valuations for UK small and mid-cap stocks remain well below historical levels. At the end of the first quarter, the FTSE 250 was around 21% below its long-term average compared with a more modest 4% discount for the FTSE 100.

The FTSE 100 is often favoured for its global diversification and income profile, but small and mid-cap stocks offer many of the same characteristics. More than half of revenues are generated overseas and dividend yields of around 3% are broadly competitive with large caps. Some domestically focused UK businesses face headwinds from softer demand, cost inflation and the wider economic backdrop, but others continue to deliver strong growth and resilient earnings. The breadth of international exposure is also important, spanning sectors from mining to US infrastructure, defence and global industrial production – providing access to a wide range of end markets.

Three UK small and mid-cap stocks to invest in

AJ Bell (LSE: AJB) is well positioned within UK asset management, benefiting from long-term structural growth, supported by favourable demographics and a gradual decline in state provision for retirement. The platform market has expanded at an annual rate of around 11% since 2018 and AJ Bell continues to gain market share, with roughly two-thirds of the addressable market still yet to move onto platforms. Its diversified model spans both adviser and direct-to-consumer channels, supported by strong client retention. Around 81% of revenues are recurring, complemented by excellent Trustpilot ratings.

Ongoing investment in the brand, technology and pricing is driving growth in customer numbers and earnings, underpinned by a strong record of execution from the management team.

Helios Towers (LSE: HTWS), an Africa-focused telecoms tower operator, is supported by sustained investment from mobile-network operators looking to expand coverage and improve the quality of service. Key growth drivers include increasing mobile penetration, rising data usage and the rollout of 4G and 5G networks. Mobile connectivity plays a central role in everyday life across the region, reflecting its importance not just for communication but also as critical payments infrastructure. Helios benefits from a scalable, largely contracted revenue model that provides good earnings visibility. The company is also building long-duration infrastructure assets, designed to generate cash flow and returns while supporting the continued rollout of its tower network.

Paragon Banking (LSE: PAG) focuses on specialist lending across the buy-to-let and commercial sectors. Sentiment remains cautious, but the stock trades on seven times earnings and a yield of 6% and there is an ongoing £100 million share buyback programme. It continues to deliver attractive returns of around 17% while maintaining strong credit quality, having successfully lent through multiple cycles. Its focus on professional landlords – typically less affected by government intervention – alongside a well-structured funding base, supports the case to buy for long-term investors.

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