I work in 20 or more dialects, so if you hear demos on my site, I can create a similar read in another accent, including North American.
I invite you to visit my website, www.adambehr.com so you can hear my samples, especially under trailer, commercial,narration,animation and you can hear either my US,International accent, Mid-Atlantic, British or many others.
Also here:
http://adambehr.voices.com/
http://voice123.com/adambehr