The global economy is currently facing a period of intense friction. From escalating tariff disputes between major powers to the ongoing conflict in Iran, investors are seeing a lot of movement in the markets. These events have a direct impact on the value of your UK-based portfolio.

When trade routes are threatened or new taxes are placed on imports, the ripple effect reaches everything from your pension to your ISA. Stay with us as we look at how these international shifts change the way you should think about your money.

Why Tariff Disputes Shake Up UK Portfolios

Tariffs are a blunt instrument in international diplomacy, but they’re being used more frequently in 2026. When a country imposes a tax on imported goods, it usually leads to higher prices for consumers and lower profit margins for companies that rely on global supply chains. For a UK investor, this means that companies in the FTSE 100 with heavy international exposure can see their share prices drop quickly. It’s worth pointing out that even if a company is based in London, its factory in Asia or its customers in America are the ones feeling the squeeze.

These disputes also lead to a shift in alliances. As trade blocks become more insular, the UK has to find a balance between its traditional partners and emerging markets. This fragmentation can lead to higher costs for businesses as they try to source materials from more expensive, but politically “safer” regions. You will likely see this reflected in the earnings reports of manufacturing and tech firms over the next few quarters.

Ways to Build Resilience with Professional Wealth Management

When the world feels unstable, the way you structure your assets becomes even more important. It isn’t enough to just pick a few stocks and hope for the best. You need a strategy that accounts for currency fluctuations and sudden changes in trade policy. Many people look to established UK experts like Rathbones to manage their assets when international relations become strained. This type of professional oversight helps to ensure that your portfolio isn’t overly exposed to a single region or sector that could be hit by the next round of sanctions.

Diversification in a fragmented economy means looking towards assets that don’t all move in the same direction. For example, while some stocks might fall during a trade war, certain commodities or defensive sectors might hold their value.

A wealth manager will look at your total financial picture and help you decide how much risk you can actually afford to take. They will help you plan for the long term instead of reacting to every headline you see on your phone.

How the Conflict in Iran Impacts Energy Markets

The war in Iran has added a layer of complexity to the global investment environment. Because the Middle East is so central to energy production, any disruption there leads to a spike in oil and gas prices.

This doesn’t just affect what you pay at the petrol pump; it drives up the cost of shipping and manufacturing for almost every business in the UK. Higher energy costs often lead to persistent inflation, which forces the Bank of England to keep interest rates higher for longer.

Investors need to be aware of how this energy volatility affects different parts of their portfolio. Some sectors will struggle with the increased overheads, while others might benefit from the rising price of oil. It’s a difficult balance to get right, especially when the situation on the ground can change in a single day. You should expect continued volatility in the energy sector as long as the conflict remains unresolved.

What Sectors to Watch in a Fragmented Economy

Some industries are more sensitive to trade wars and geopolitical conflict than others. By identifying these areas, you can better understand where the risks and opportunities lie in your current holdings.

The following list includes sectors that often see significant movement during times of global trade tension:

• Defence and Aerospace: These firms often see increased orders when global tensions rise and governments spend more on security.
• Technology and Semiconductors: This sector is often at the heart of trade disputes, especially when it comes to export controls and intellectual property.
• Consumer Goods: Companies that source products globally are highly vulnerable to new tariffs and shipping disruptions.
• Energy: As we have seen with the conflict in Iran, energy companies are directly tied to geopolitical stability.

Conclusion

The world is moving towards a more fragmented system, and your investment strategy needs to reflect that reality. Between the war in Iran and the constant threat of new tariffs, the “buy and hold” approach of the past might not be enough on its own.

You will need to stay informed about how global politics affect the specific companies you own. While the current market feels unpredictable, a focus on quality and professional management can help you protect your wealth over the coming years.

The value of your investments and the income from them may go down as well as up, and you could get back less than you invested. Past performance should not be seen as an indication of future performance.