Originally Posted by HarryT
Look at the descriptions of them - it will tell you.
Not that I can see. Taking the following as examples
Collins Unabridged English
Concise Oxford English Dictionary
Merriam Webster VestPocket Dictionary
Merriam-Webster's Collegiate Dictionary, 11th Edition
What I'm looking for is a British english dictionary, I'd assume the OED and Collins would be British but have no idea if they do US versions too (which would be more likely sold from the US based mobipocket), the descriptions do not give any hints