I suspect that most of us don't look at where something is coming from just the actual product (well unless the website is obviously 'foreign'. I have learned to put 'UK' when searching, nothing as annoying as finding something perfect and realising you are looking at a USA site with all the shipping problems.
OTOH I have bought things and been surprised to find they came from a European country not GB. Usually thanks to the vagaries of our friend the South American River.