Two UK growth shares I’m buying

In a hunt for UK growth shares, Christopher Ruane has identified two companies for his portfolio. Here he explains why he’s been buying them.

| 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 am happy collecting dividends from income shares. But I also like the prospect of capital growth. So I’ve been adding UK growth shares to my holdings. Here are two I’m buying for my portfolio.

Proven adman

I was surprised recently to notice that Martin Sorrell had bought 10,000 shares in the company he leads, S4 Capital (LSE: SFOR). After all, he already held over 54m shares in the company. Why buy more?

Like me, he apparently remains excited about the prospects for these UK growth shares. He bought on 17 May during a fallback to £5.13 and the shares have now bounced back to £5.60. Over the past year, the S4 Capital share price has put on 130%.

With his track record at WPP, Sorrell has proven his ability to build an ad agency network at scale. He’s doing the same thing at S4, which now numbers almost 5,000 employees in 31 countries.

UK growth shares

I regard these as growth shares because the company is positioned in digital marketing, which continues to increase in size. With its wide offering and exclusive focus on digital, S4 is positioned to ride this rising tide. That combines with Sorrell’s dealmaking prowess to make S4 capital a growth machine.

The company’s first-quarter results showed revenue up 71%. Even stripping out the impact of acquisitions, like-for-like revenues rose 35%. Reported gross profit also rose 71%, with a like-for-like increase of 33%.

The company is looking to tap the bond markets so it can build a £500m war chest for acquisitions. I continue to see strong growth potential for S4. I would consider buying more of these UK growth shares for my portfolio today.

However, the role of Martin Sorrell here is a risk. While the company’s talent pool is growing fast, it still seems to rely on the vision, energy and skill of its founder. If for any reason he left suddenly, I think it would hurt the S4 Capital share price.

Medical exposure

I recently opened a position in Renalytix AI (LSE: RENX). These UK growth shares made it into my portfolio because, like S4, I think they could be a way to benefit from the increased role of digital technology.

In the case of Renalytix, that’s in the field of kidney diagnosis. Its artificial intelligence platform may allow it to deliver this vital service in a cost-effective way.

Growth potential

I’ve been following Renalytix for a while. But what made me decide to buy these UK growth shares was a combination of two news stories I thought boded well. First came positive results from a clinical study into the use of the company’s flagship product. Then a deal with the US government was announced. It enables Renalytix to supply customers such as the US military.

Such sales are not guaranteed, however. One risk with the Renalytix AI share price is that sales may not materialise fast enough. Competitors are working in the same space. They could impact the revenues it’s able to generate by developing their own cheaper alternatives.

christopherruane owns shares of S4 Capital plc. 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

Snowing on Jubilee Gardens in London at dusk
Investing Articles

Could 2026 be a strong year for UK shares?

2025 was an excellent year for the index of leading UK shares. But not all of its members did so…

Read more »

Playful senior couple in aprons dancing and smiling while preparing healthy dinner at home
US Stock

Prediction: this S&P 500 sector could produce the best returns in 2026

Jon Smith puts big tech to one side and talks about why he sees another sector from the S&P 500…

Read more »

Investing Articles

Up 80% with a P/E of 15 and 4% yield – can the Lloyds share price smash it again in 2026?

Harvey Jones is blown away by how well the Lloyds share price has done in recent years. Can the FTSE…

Read more »

Investing Articles

I’m taking a risky bet on these 3 bombed-out FTSE 100 growth shares in 2026

Harvey Jones is excited by the prospects for these troubled UK growth shares, but he's also a little concerned that…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

Demand for these high-yielding FTSE 100 dividend shares could soar in 2026

As interest rates continue to fall, Paul Summers wonders if these top-tier dividend shares could be on many investors' radars…

Read more »

Female student sitting at the steps and using laptop
Dividend Shares

How much do you need in income stocks to save £10k a year from dividends

Jon Smith points out how income stocks can act to build an investor more savings, and points out an investment…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

What if the stock market crashes in 2026?

The stock market is great when it’s going up, but what if it crashes? It’s a good question – but…

Read more »

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing Articles

How much do you need in an ISA to target £1,800 a month of passive income?

How can an investor aim for £1,800 a month in passive income? Muhammad Cheema explains how this could be possible…

Read more »