Fewer Shares, Same Problems: The Buyback Trick Quietly Flattering UK Earnings

There is a particular kind of magic trick that UK boardrooms have perfected. It doesn't involve rabbits or top hats. It involves buying back a chunk of the company's own shares, watching the share count fall, and then presenting the resulting rise in earnings per share as if the business itself had somehow become more profitable.

Sometimes it has. Often it hasn't. And in late 2026, with buybacks running at a record pace across the FTSE, the distinction matters more than ever.

Let's be blunt: a shrinking denominator is not the same thing as a growing numerator. Yet the market keeps treating the former as though it were the latter.

The arithmetic is not the business

Buybacks work their illusion through simple division. If a company earns £100m and has 100m shares, EPS is £1. Buy back 10m shares, and suddenly that same £100m is spread across 90m shares. EPS becomes £1.11. No extra profit has been generated. No new customer has been won. No factory has become more efficient. The company has simply bought a slice of itself and retired it.

That can be a perfectly rational use of capital — if the shares are cheap, the business is generating surplus cash, and there is nothing better to do with the money. But it can also be a way of dressing up a stalling underlying performance. And the City, which loves a clean EPS line almost as much as it loves a tidy narrative, is not always brilliant at looking underneath.

Where the money comes from matters

This is the bit that gets lost in the press release. A buyback funded from genuine post-capex free cash flow, at a sensible valuation, is a quiet win for long-term holders. A buyback funded from debt, asset sales, or a quiet squeeze on investment is something else entirely.

In the low-rate era, debt-funded buybacks looked clever because borrowing was cheap and the shares often went up. In 2026, with the cost of capital meaningfully higher than it was, that trade is less obviously smart. If net debt is creeping up while the buyback programme is running, the company is effectively swapping equity for borrowed money and hoping the market doesn't notice the difference.

Then there is the asset-sale route. Selling a division or a property portfolio to fund buybacks can look like disciplined capital allocation. Sometimes it is. But if the assets being sold are the ones generating the cash, and the shares being bought are in a business with a uncertain future, the trick starts to look more like a magic act than an investment case.

And then there is the quietest form of all: deferred investment. Capex as a percentage of sales drifts down. Maintenance gets pushed back. The buyback gets funded, the EPS line gets a lift, and the long-term cost shows up years later in the form of lost competitiveness or a bigger catch-up bill.

The dividend cover tell

One of the most useful places to look is the dividend. A shrinking share count can make dividend per share look healthier than the total cash being paid out. If the company is paying roughly the same total dividend each year, but the share count is falling, DPS rises. That looks like dividend growth. It may be nothing of the kind.

Check the total dividend bill against free cash flow. Check dividend cover on both earnings and cash. If cover is thin and falling while buybacks are running, you are watching a company choose the share price over the income statement's long-term health. That is not necessarily fatal, but it is a choice you should understand.

A contrarian checklist for UK buybacks

Before you treat a buyback as a sign of strength, run through a few blunt questions:

• Is the buyback funded from post-capex free cash flow, or from debt and asset sales?
• Is net debt falling, stable, or rising while the programme runs?
• Is capex as a percentage of sales holding up against its own five-year average?
• Is dividend cover improving or deteriorating on a cash basis?
• Are directors buying shares with their own money, or just receiving them?
• Is the company buying back stock at a discount to intrinsic value, or simply supporting the price?
• Does the total shareholder yield — dividends plus buybacks — look sustainable against cash generation?

None of these questions is exotic. They are the sort of thing a careful owner would ask. But they are easy to skip when the headline EPS number is doing something pleasing and the share price is responding.

Why the market keeps falling for it

Part of the reason is structural. Screening tools rank companies on EPS growth, not total profit growth. Fund managers are judged against benchmarks that reward per-share metrics. Executive pay schemes often use EPS as a yardstick. When the incentive is to shrink the share count, the share count shrinks.

There is also a psychological pull. Buybacks feel like a vote of confidence. Management is putting the company's own money where its mouth is. In a UK market that has spent years being told it is unloved and undervalued, that signal is seductive. But a buyback is only a signal if the cash is genuinely spare. Otherwise it is a loan against the future, dressed up as a gift to shareholders.

The bottom line

Buybacks are not inherently bad. At the right price, funded from genuine surplus, they can be one of the best things a company does with your money. But the FTSE's current enthusiasm for them deserves more scrutiny than it is getting. A smaller share count is not evidence of a stronger business. It is evidence of a smaller share count.

If earnings are stalling and the buyback is doing the heavy lifting, you are not watching growth. You are watching arithmetic. And arithmetic, however clever, eventually has to answer to cash flow.