FTSE 100 shares: I think buying cheap UK shares in my ISA in 2021 could DOUBLE my money!

I don’t care about the uncertain economic environment. I’ll keep buying UK shares from the FTSE 100 in my ISA in 2021. And this is why.

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.

Have you started thinking about which UK shares you’d like to buy in 2021? I’ve built a watchlist of FTSE 100 shares I’m considering buying for the new year. Even signs of a spluttering global economic recovery won’t stop me from building my Stocks and Shares ISA.

Firstly, there are plenty of defensive FTSE 100 shares out there that should deliver big shareholder returns even if conditions remain tough. Utilities providers like National Grid, telecoms ace Vodafone or defence contractor BAE Systems, for example.

Secondly, I invest with a view to making big long-term returns rather than making a quick buck. I’ll buy UK shares in 2021 that have the balance sheet strength to survive a prolonged period of pain for the global economy. 

Staying positive

The FTSE 100 is packed with top stocks like these. And they have the capacity to deliver gigantic shareholder returns during the inevitable bull market. It might not happen in 2021, but the global economy will rebound from the Covid-19 crisis. Profits from UK plc will recover strongly, as they always do following severe economic crises. And a subsequent recovery in investor confidence will push UK share prices through the roof.

The UK national flag in front of Canary Wharf skyscrapers where professionals trade shares for a living.

This is how hundreds (some argue thousands) of Stocks and Shares ISA investors became millionaires in 2010s. They bought robust UK shares in the immediate aftermath of the 2008/09 financial crisis. And they raked in the cash as the value of their investments recovered strongly.  

The FTSE 100, for instance, more than doubled in value in the years following the banking crisis. The blue-chip index hit a trough of around 3,800 points in February 2009. But by summer 2018 it had swept to record peak of around 7,800 points. Those who bought into Footsie-quoted stocks during the period made a killing.

3 reasons UK share prices should soar

I can’t see why UK shares won’t soar following the coronavirus crisis either. In fact, there are several major reasons why I reckon the recovery could mirror that which we saw during the last decade.

  • Central banks and governments all over the globe remain committed to printing money to aid the economic recovery. Critically, the US Congress just signed off on a $900bn Covid-19 relief package to companies and citizens. The Federal Reserve also remains conducive to further rounds of quantitative easing in 2021. It’s likely that ultra-low interest rates will be here to stay well into the new decade too.
  • The mass cutting and cancellation of dividends this year has helped to build bulky balance sheets. This cash can be reinvested once the pandemic passes to boost earnings growth and give UK share prices an extra lift.
  • Many UK shares also continue to trade at rock-bottom valuations following the 2020 stock market crash. This provides extra scope for a stunning bull market in the years ahead.

Royston Wild has no position in any of the shares mentioned. 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

A senior man using hiking poles, on a hike on a coastal path along the coastline of Cornwall. He is looking away from the camera at the view.
Investing Articles

Is Diageo quietly turning into a top dividend share like British American Tobacco?

Smoking may be dying out but British American Tobacco remains a top dividend share. Harvey Jones wonders if ailing spirits…

Read more »

Young woman holding up three fingers
Investing Articles

Just released: our 3 top income-focused stocks to consider buying in December [PREMIUM PICKS]

Our goal here is to highlight some of our past recommendations that we think are of particular interest today, due…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Tesco’s share price: is boring brilliant?

Tesco delivers steady profits, dividends, and market share gains. So is its share price undervaluing the resilience of Britain’s biggest…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

1 huge takeaway from the Martin Lewis investing presentation

Martin Lewis showed how returns from stocks have smashed the returns from cash savings over the last decade. But here’s…

Read more »

Middle aged businesswoman using laptop while working from home
Investing For Beginners

I think the best days for Lloyds’ share price are over. Here’s why

Jon Smith explains why Lloyds' share price could come under increasing pressure over the coming year, with factors including a…

Read more »

A graph made of neon tubes in a room
Investing Articles

£5,000 invested in the FTSE 100 at the start of 2025 is now worth…

Looking to invest in the FTSE 100? Royston Wild believes buying individual shares could be the best way to target…

Read more »

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

Can the BAE share price do it again in 2026?

The BAE share price has been in good form in 2025. But Paul Summers says a high valuation might be…

Read more »

Investing Articles

Can Rolls-Royce, Babcock, and BAE Systems shares do it all over again in 2026?

Harvey Jones examines whether BAE Systems and other defence-focused FTSE 100 stocks can continue to shoot the lights out in…

Read more »