With a track record of dominating the stock market for over six decades, when billionaire investor Warren Buffett speaks, the world listens. And over the years, he’s used that platform to share market-beating wisdom with investors everywhere, including his view on what might be the single best investment anyone can make in 2026 and beyond…

The best investment in the world is…

As Buffett puts it: “The best investment you can make is in yourself.” It sounds almost too simple to be useful, but there’s real substance behind it.

Knowledge is what allows an investor to spot which businesses have the widest competitive moats, the most prudent leadership, and the healthiest financials, long before the wider market catches on.

Master that skill once, and it doesn’t just help find one good stock, it becomes a repeatable process for discovering the next great investment for decades to come. Exactly as Buffett’s done throughout his entire career.

So what does a business exhibiting all three traits actually look like here in the UK?

A UK stock built the Buffett way

In my opinion, Games Workshop (LSE:GAW), the maker of the Warhammer tabletop universe, ticks all three boxes rather convincingly.

Its moat comes from owning its entire fictional universe outright, meaning Games Workshop faces essentially no significant direct competitor selling its own miniatures for its own games. And in recent years, it’s been taking the power of its IP to the next level through licensing to film and video game studios almost entirely on its own terms.

Leadership has also been consistently prudent. CEO Kevin Rountree has steered the business through tariff shocks and licensing swings without sacrificing profitability.

So much so that even with these headwinds, rising plastic prices, and a painful cost-of-living crisis, Games Workshop just delivered another set of record-breaking results with even more growth on the horizon.

For reference, in its 2026 fiscal year (ended in May), core revenues jumped 10.9% to £659.7m, while pre-tax profits reached as high as £275.7m even after absorbing new tariff costs. Not bad for a business that sells plastic miniatures!

What’s the catch here?

Pricing power has its limits. And with cost pressures mounting for both Games Workshop and its customers, securing consistent double-digit growth’s unsurprisingly getting harder through selling miniatures alone.

Management isn’t blind to this emerging trend. In fact, it’s one of the main reasons why the firm has started pushing more aggressively into licensing to open up and diversify into a new source of high-margin income. But if executed poorly, this strategy could backfire.

Low-quality productions and poor adaptations could ultimately harm and undermine the Warhammer brand, particularly for those who are experiencing the universe for the first time through video games or TV shows.

Still worth considering?

Despite the challenges on the horizon and the execution risk of its growth strategy, it’s rare to find a business with such a structural moat, disciplined leadership, and consistent, record-breaking results maintained year after year.

This is precisely the type of business Buffett has spent his life hunting for. And it’s why I’ve already added the shares to my portfolio.

Should you invest £5,000 in Games Workshop Group Plc right now?

When investing expert Mark Rogers and his team have a stock tip, it can pay to listen. After all, the flagship Twelfth Magpie Share Advisor newsletter he has run for nearly a decade has provided thousands of paying members with top stock recommendations from the UK and US markets.

And right now, Mark thinks there are 6 standout stocks that investors should consider buying. Want to see if Games Workshop Group Plc made the list?

Zaven Boyrazian owns shares in Games Workshop.