A trade deal with Canada was not listed as a priority for the UK government last year, when Trade Minister Douglas Alexander listed agreements with the Gulf Cooperation Council, India, Israel, the Republic of Korea, Switzerland, and Turkey as the areas his department was focusing on. But Trump’s return to the White House and his ratcheting up of tariffs against countries around the world has forced UK negotiators to recalibrate — seeking exemptions from the US levies while also casting a wider net in their search for new deals.