How I’d invest £20k in UK shares right now to make a million

Today I’m going to explain the simple strategies I’d use to invest £20k in UK shares with the goal of making £1m in the long run.

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.

Now could be one of the best times to buy UK shares. And with that in mind, today I’m going to explain the strategy I’d use to invest £20k in London-listed stocks with the goal of making £1m. 

Time to buy UK shares 

I think there are a couple of strategies I could use to try and make £1m with an investment of £20,000. 

One of the easiest could be to buy a low-cost FTSE 250 tracker fund. Over the past 35 years, this index has produced an average annual return of around 11% to 12%. The combination of mid-cap growth stocks and a steady stream of income, has helped turbocharge returns. 

At this rate, I estimate it would take around 33 years to turn an investment of £20,000 in £1m by investing in UK shares. 

Growth shares

That’s one strategy. Another approach I would consider using is buying a basket of high-quality UK growth stocks. Some of the best London-listed growth stocks have produced huge returns for investors over the past decade.

A great example is Games Workshop. Over the past five years alone, an investment of £10,000 in this company’s stock has grown into £260,000. That’s an average annual return of more than 40%

I think it’s unlikely the stock will continue to return 40% per annum indefinitely, but with profit margins of more than 20%, I reckon Games Workshop may continue to earn some of the highest returns of all UK shares. 

Unfortunately, finding future growth stars isn’t particularly easy. It’s quite difficult to determine future winners. Even the professionals regularly get it wrong. 

As such, if I’m looking to acquire a basket of UK shares with strong growth potential, I think buying a diversified fund is a good idea. There are many options on this front. One of my favourites is the Mercantile Investment Trust

This investment trust owns a broad selection of growth stocks. Games Workshop is one of its top holdings. The diversification provides a level of protection for investors, and there’s also a dividend yield of 3% on offer. A low annual management charge of around 0.5% is one of the best on the market. 

The road to a million

All in all, I believe that acquiring a portfolio of UK growth shares is the best way to turn an investment of £20,000 into a £1m fund. There are several approaches I could use to hit this target, as outlined above.

A portfolio of individual growth stock offers some benefits and may achieve higher returns, but it can be difficult to find future winners in the market. 

Buying a low-cost tracker fund or actively managed investment trust is another approach that involves much less effort. These investments may not produce the same kind of returns as some individual equities, but they reduce the chances of making a mistake when picking stocks. 

Rupert Hargreaves owns shares in the Mercantile Inv Trust. 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

Lady wearing a head scarf looks over pages on company financials
Investing Articles

Is April a good time to start buying shares?

Wondering whether now's a good time to start buying shares to build wealth? History suggests it is, says Edward Sheldon.

Read more »

A senior group of friends enjoying rowing on the River Derwent
Investing Articles

How much passive income could a Stocks and Shares ISA pump out every year?

Regular investing inside a Stocks and Shares ISA could lead to the equivalent of £141 a week in tax-free passive…

Read more »

Fans of Warren Buffett taking his photo
Investing Articles

With the FTSE 100 down 5%+ investors should remember this legendary quote from Warren Buffett

Warren Buffett is widely regarded as the greatest investor of all time. And he says that the best time to…

Read more »

Inflation in newspapers
Investing Articles

1 FTSE 100 stock that could benefit from higher inflation

For most companies, inflation is a risk. But for one FTSE 100 firm, higher input costs could be an opportunity…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

The 2026 stock market sell-off could be a rare opportunity to build wealth in an ISA

The recent stock market sell-off has led to some shares falling 20% or more. This could be a great opportunity…

Read more »

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

It’s down another 13%! Analysts were dead wrong about the Greggs share price

The Greggs share price continues to fall and analysts have been revising their share price targets down further. Dr James…

Read more »

Burst your bubble thumbtack and balloon background
Investing Articles

Is the stock market about to reach breaking point?

Private credit has a problem with the emergence of artificial intelligence. And it could be set to create issues across…

Read more »

BUY AND HOLD spelled in letters on top of a pile of books. Alongside is a piggy bank in glasses. Buy and hold is a popular long term stock and shares strategy.
Investing Articles

A once-in-a-decade chance to buy this S&P 500 stock?

As investors focus on oil prices and the conflict in Iran, Stephen Wright's looking at potential opportunities in the S&P…

Read more »