The EU has responded quickly and announced its own tariffs in the multi-billion class after the US decision to introduce 25-percent tariffs on steel and aluminum.
However, the UK still hopes for a broader economic agreement with the US instead of countermeasures.
"I will continue to have close and constructive contact with the US to drive the issue of British business interests," says Business Minister Jonathan Reynolds in a statement.
"We will keep all options on the table and will not hesitate to respond in the national interest."
Canada responds
Meanwhile, the tariff war between the US and Canada appears to be heating up again.
After the conflict earlier in the week, where the US finally backed down from the threat of introducing 50-percent punitive tariffs, Canada is now said to be close to presenting a response to the planned US tariffs.
A government official tells AP that Canada, which is the largest foreign supplier of steel and aluminum to the US, will present tariffs worth 29.8 billion Canadian dollars (equivalent to 208 billion kronor).
"Regrettable" message
From China and Japan, the tones have so far been cautious.
China says it will take "all necessary measures" to protect its interests. Mao Ning, spokesperson for China's Foreign Ministry, said at a press conference that the US's actions "seriously violate" the rules within the World Trade Organization (WTO).
According to Yoshimasa Hayashi, spokesperson for the Japanese government, the tariffs risk having a "significant impact on the economic relationship between Japan and the US".
The fact that Japan was not exempted from the introduction of additional tariffs is regrettable, he says.
