Writing on social media on Saturday, Trump said that he would impose tariffs on the UK, Denmark, Norway, Sweden, France, Germany, the Netherlands, and Finland.
He said they would be charged “a 10% tariff on any and all goods” sent to the US, with the tariff raised to 25% on 1 June.
The new import taxes would “be due and payable until such time as a deal is reached for the complete and total purchase of Greenland” and would begin on 1 February.
Sommerville said now there was uncertainty again of “not knowing what’s going on”.
She said: “Yesterday we pulled out of a contract we were negotiating because it affects our price with the customer and our customer wants to place the order so we pulled out of it – which was a hit of around $400,00 in revenue for us.”
She said last year the company’s turnover was down by 20%, and now its growth patterns have had to be rewritten.
Instead, the firm is now looking to develop a new product for the UK market.
Sommerville said: “We’re moving the effort and investment in the US to Europe. But then there’s the problems with Brexit.
“If the government could focus on making a better deal with us in Europe to make trade easier to flow – it would help.”