From Saturday, a new 10% "baseline" tariff will be imposed on all goods imported into the US, a move announced by President Trump that particularly targets countries deemed as "worst offenders" in trade practices. As this policy takes effect, questions are surfacing regarding the implications for products such as the iPhone, which are manufactured in China and other affected nations.

One significant consequence observed immediately was a sharp 7% decline in Apple’s share price, highlighting the company’s vulnerability amidst these tariff changes. Apple, with its substantial manufacturing operations in both China (53% tariffs) and Vietnam (46% tariffs), is particularly at risk. In past instances, Apple has been granted exemptions from tariffs, and many industry analysts are keenly watching to see if the tech giant can negotiate similar terms this time around. Citi has projected that without exemptions, Apple may face a 9% decline in total gross margin.

As for the broader consumer landscape, U.S. shoppers are likely to bear the brunt of these tariffs, facing higher prices and diminished choices in products. This uncertainty may also prompt manufacturers to pivot and explore new markets, as seen during Trump’s first term—where exporters in countries like Vietnam and Malaysia capitalized on reduced sales from China.

In the UK, the impact of the US tariffs raises further questions. While increased tariffs on US imports may initially hit American consumers, a weaker pound could similarly drive prices upward for UK companies sourcing US products. Moreover, should the UK consider retaliatory tariffs against American goods, British consumers risk facing higher prices if businesses opt to pass on these costs.

On the investment front, immediate reactions following Trump's announcement have resulted in volatility in share prices. Concerns are growing among individuals with pension investments as they question the long-term economic implications of these tariffs. Experts advise a steady approach, emphasizing that investments necessitate patience and a long-term strategy.

Lastly, in the context of Brexit, the UK's reduced 10% tariff compared to the EU's 20% could provide a competitive edge in trading with the US market. However, there's a looming worry about how cheaper imports could threaten domestic industries if low-standard products begin to flood the market.

As these developments unfold, how governments and businesses navigate the changing landscape will be crucial in shaping the future of global trade and economic sustainability.