UK does a relatively paltry ~ $50bn +/- $2bn  a year with USA, hardly likley to swing $19 bn.  Machinery, maufactured good, chemicals, there's not a lot that the US is clammoring for, some high end cars for example (jag, Range Rover, Bentley, McLaren).   With the supply siders in charge in the US, expect those $$ car sales to increase, if the Reaganomics bump occurs as they hope.