3 no-brainer UK shares to buy in September

A diversified portfolio can spread an investor’s risk and return. Harshil Patel looks at three varied UK shares he’d buy this September.

| More on:

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

I try to own UK shares that are diversified across sectors and sizes. Listed companies tend to fall into size groups such as large-cap, mid-cap, and small-cap. The criteria of each group tends to change over time as the stock market fluctuates.

Currently, I would describe large-cap shares as those with market capitalisations of over £10bn. Mid-cap could have a range of £2bn–£10bn. Finally, small-cap could be companies below £2bn.

Large-cap companies tend to be more mature, dominant, and leaders in their sectors. As they’re more established businesses, they can have lower growth rates but greater stability.

Smaller companies can potentially grow faster, and this can be reflected in more rapidly rising share prices. That said, they can be riskier and their share prices can be more volatile.  

Mid-cap companies contain characteristics that lie somewhere in between, offering lower volatility than small-caps but more growth than large-caps.

No-brainer UK shares

I’ve found three no-brainer UK shares that I’d be happy to add to my Stocks and Shares ISA in September. One from each of the three size groups.

From the large-cap group, I’m looking at equipment rental company Ashtead (LSE:AHT). With a market-cap of over £25bn, this large industrial firm is an established player in its field. What I like about Ashtead is its exposure to US infrastructure.

Over 80% of its sales takes place in the US, and it should benefit from the US government’s plan to invest over $1trn in infrastructure projects. This bodes well for Ashtead as it rents equipment like diggers, construction tools, and cement mixers. All of these would be used to build or repair roads, bridges, and transport systems.

Business is picking up and it has ambitious growth plans. However, Ashtead does operate in a cyclical industry. Any recession could have a material impact on its share price. Weighing it up, I’d consider buying some shares for my portfolio.

Robust summer trading

My mid-cap pick is computer services firm Computacenter. Trading was “robust” in July and August, and I reckon the positive momentum could continue in September. Its recent trading statement was encouraging, and its management sound confident at beating market analysts’ expectations.

I should note that its profit margins are smaller than other companies that I like, and it operates in a competitive market.

However, Computacenter is a quality player in the IT infrastructure sector. This top UK share offers solid returns, encouraging trading momentum and even offers a 2% dividend.

Electric growth

My favourite small-cap company right now is Volex. It’s a high-quality cable manufacturer that operates in several fast-growing industries including data centres, electric vehicles, and medical devices.

It’s currently experiencing several positive trends. Customer demand is growing, profit margins are expanding, and it’s managing to successfully acquire smaller companies.

There could be some challenges with supply shortages and rising materials costs, but so far these are being managed well.

Overall, I think it’s a reasonably priced small-cap firm with excellent growth prospects. I’d definitely consider buying more of these UK shares for my ISA.

Harshil Patel owns shares of Volex. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Investing Articles

Is 2026 the year the Diageo share price bounces back?

Will next year be the start of a turnaround for the Diageo share price? Stephen Wright looks at a key…

Read more »

Investing Articles

Here’s my top FTSE 250 pick for 2026

UK investors looking for under-the-radar opportunities should check out the FTSE 250. And 2026 could be an exciting year for…

Read more »

Yellow number one sitting on blue background
Investing Articles

Here’s my number 1 passive income stock for 2026

Stephen Wright thinks a 5.5% dividend yield from a company with a strong competitive advantage is something passive income investors…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

Should I sell my Scottish Mortgage shares in 2026?

After a strong run for Scottish Mortgage shares, our writer wonders if he should offload them to bank profits in…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Down 35%! These 2 blue-chips are 2025’s big losers. But are they the best shares to buy in 2026?

Harvey Jones reckons he's found two of the best shares to buy for the year ahead, but he also acknowledges…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

State Pension worries? 3 investment trusts to target a £2.6m retirement fund

Royston Wild isn't worried about possible State Pension changes. Here he identifies three investment trusts to target a multi-million-pound portfolio.

Read more »

Smiling white woman holding iPhone with Airpods in ear
Dividend Shares

4 dirt-cheap dividend stocks to consider for 2026!

Discover four great dividend stocks that could deliver long-term passive income -- and why our writer Royston Wild thinks they’re…

Read more »

Young mixed-race woman jumping for joy in a park with confetti falling around her
Investing Articles

These fabulous 5 UK stocks doubled in 2025 – can they do it again next year?

These five UK stocks have more than doubled investors' money as the FTSE 100 surges. Harvey Jones wonders if they…

Read more »