Share your opinion and earn yourself a free Motley Fool premium report!

We are looking for Fools to join a 75 minute online independent market research forum on 15th / 16th December.

To find out more and express your interest please click here

I’m using the P/S and P/E ratios to find the cheapest UK shares!

The P/S metric is often used for valuing growth stocks, but today I’m using it, along with the P/E ratio to find some of the cheapest UK shares.

| 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.

A young woman sitting on a couch looking at a book in a quiet library space.

Image source: Getty Images

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’m using two valuation metrics to find the cheapest UK shares.

The price-to-sales (P/S) metric indicates a company’s revenue against its value. The ratio is calculated by taking a company’s market capitalisation and dividing it by the firm’s revenue over the past year.

The metric is normally used when a company isn’t making a profit. For example, I may use this more often when I’m looking at growth stocks. Tesla is one of the few companies making a profit in the EV industry, so using the P/S ratio, I can easily compared Tesla’s valuation against its peers.

Meanwhile, the price-to-earnings (P/E) ratio is more frequently used and is calculated by dividing the market value by the company’s earnings.

So, let’s take a look at the cheapest UK-listed shares using these metrics.

Polymetal

Polymetal (LSE:POLY) is an Anglo-Russian mining stock and its share price tanked after the Russian invasion of Ukraine. Sanctions have made it hard for the company to continue operating as normal.

The mining group has highlighted uncertainty around funding as a result of sanctions placed on Russian banks and the state as a whole.

It may also struggle to sell its main product, gold. Fellow Russian Petropavlovsk said that its sales fell after its main customer, Gazprombank, was placed on the European sanctions list. 

It’s fair to say that gold mining stocks should be doing pretty well this year, but Polymetal isn’t. It’s down 89% over the past 12 months.

Following a solid showing in 2021, the company now trades with a P/E ratio of 1.1. Meanwhile it has a P/S ratio of 0.3. Both of these figures are exceptionally low, correctly suggesting that something is wrong.

On the plus side, Polymetal expects to produce 1.7m ounces of gold this year — 1.2m oz in Russia and 500,000 oz in non-sanctioned Kazakhstan.

Ferrexpo

Ferrexpo (LSE:FXPO) is a Swiss-based miner with operations in Ukraine. The stock also collapsed following Russia’s invasion of Ukraine. It’s down 76% over the past 12 months.

Some 70% of Ferrexpo’s mines are in Ukraine. Last week, the firm announced that total iron ore pellet production fell 27% on the year to 2.1m tonnes during the second quarter. First-half sales were down 21% on the year to 4.4m tonnes.

The fall is production was naturally attributed to the war. However, the company vowed to continue its operations despite a very difficult operating environment.

Iron ore prices have been pretty strong throughout most of the year, so I’d expect Ferrexpo to be doing pretty well if it wasn’t for the war.

Currently Ferrexpo is trading with a P/E ratio of 0.85. It has a P/S ratio of 0.25. Once again, these are exceptionally low figures that correctly indicate that something isn’t right.

Would I buy either of these stocks?

I actually owned Polymetal shares before the war, and I bought some more when the stock collapsed as a very speculative investment.

Based on the same logic, of a speculative approach, I’d also put a limited amount of money into Ferrexpo shares too.

But it would be a huge gamble. It’s not so much about the assessing the fundamentals of these companies. Instead it’s about predicting or guessing when the war will be over and when sanctions may be removed. That’s a tough call.

James Fox owns shares in Polymetal. The Motley Fool UK has recommended Tesla. 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

Young woman holding up three fingers
Investing Articles

Want to start investing in 2026? 3 things to get ready now!

Before someone is ready to start investing in the stock market, our writer reckons it could well be worth them…

Read more »

Investing Articles

Can the stock market continue its strong performance into 2026?

Will the stock market power ahead next year -- or could its recent strong run come crashing down? Christopher Ruane…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

Here’s how someone could invest £20k in an ISA to target a 7% dividend yield in 2026

Is 7% a realistic target dividend yield for a Stocks and Shares ISA? Christopher Ruane reckons that it could be.…

Read more »

A quiet morning and an empty Victoria Street in Edinburgh's historic Old Town.
Investing Articles

How little is £1k invested in Greggs shares in January worth now?

Just how much value have Greggs shares lost this year -- and why has our writer been putting his money…

Read more »

Businessman using pen drawing line for increasing arrow from 2024 to 2025
Investing Articles

This cheap FTSE 100 stock outperformed Barclays, IAG, and Games Workshop shares in 2025 but no one’s talking about it

This FTSE stock has delivered fantastic gains in 2025, outperforming a lot of more popular shares. Yet going into 2026,…

Read more »

Close-up of British bank notes
Investing Articles

100 Lloyds shares cost £55 in January. Here’s what they’re worth now!

How well have Lloyds shares done in 2025? Very well is the answer, as our writer explains. But they still…

Read more »

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

How much do you need in an ISA to target £2,000 a month of passive income

Our writer explores a passive income strategy that involves the most boring FTSE 100 share. But when it comes to…

Read more »

Investing Articles

£5,000 invested in a FTSE 250 index tracker at the start of 2025 is now worth…

Despite underperforming the FTSE 100, the FTSE 250 has been the place to find some of the UK’s top growth…

Read more »