Back in 2018, Donald Trump had imposed sweeping tariffs of 25 percent for steel and 10 percent for aluminium, but there had been exceptions made for many countries that the US had been allied with. However, all of the exclusions have since gone and the tariffs have been applied to every country, including the UK.

But it's important to note that these latest US tariffs - taxes on imports - also cover products made with steel and aluminium, which covers everything from gym equipment, to furniture, to machinery.

Tariffs are a central part of Trump's overall economic vision. He says tariffs will boost US manufacturing and protect jobs, raising tax revenue and growing the domestic economy.