The law should be universal anywhere. apart from speed camera alerts where the UK is over populated with them.
Why do you need sat nav if you are looking at the screen, set it up before you leave and listen to the voice commands.
I read about a woman who had a sat nav to find her regular hair dresser
Sat Nav should not be used as a road atlas, you wouldnt read a map while driving would you?
It really does annoy me to see someone trying to press buttons on the screen while driving, its worse than using a mobile phone