I think most are pretty similar. The ideas of work harming the public (as in pixelscapes thread) is applicable here - which is why galleries and stuff have 3rd party liability insurance. I have it as well through my gold membership with the SAA (www.saa.co.uk
) for my open studios and any demos I do.
Copyright law is also the same because both the UK and US are members of the Berne Copyright Convention. There may be slight differences but they'd probably be minor and related to the fact that the US joined the agreement later. Most of the copyright discussions here are relevent for us in the UK too.