Going by the chart below, then the high priorities might account for something like 30% - ~50% of our exports via value. (if you make a working assumption that aviation parts from little companies such as Rolls Royce come under "mechanical machinery" rather than "finished aircraft" and so are mostly aviation products)
https://i0.wp.com/www.edmundconway.com/wp-content/uploads/2013/06/exports1.jpg
I suspect the government has got a better breakdown of our trade figures than I have from googling it, and is treating the most valuable sectors first though I'm not really sure where textiles came from on the list. Where would you put telecoms on your priorities?
Biting the hand that feeds IT
