Charging US client. How does it work?

[ASB]

If the service was provided from the UK then it is not UK vatable - see the flowchart on place of supply on HMRC.

It might be wise to check what the US rules are in the state on the import of electronic services. It's unlikely to require you to charge any US charges - but you customer might have some they should pay (unlikely though).

[BoredBloke]

When I worked for a US company I was told by my accountant not to charge VAT.

[xchaotic]

I've been wondering, how does it work, for things like web design, or sysadmin.
Do you charge VAT?
Any other costs for either side?