4 links
British-American Dictionary
travelfurther.net
An easy to read, humorous translation of British English to American English
English Usage in the UK and USA
krysstal.com
A light-hearted look at some differences between English as spoken on both sides of the Atlantic.
Holiday Inn UK - I Say Tomato
holiday-inn.co.uk
American-British travel dictionary and a few dozen British to American translations.
The Best of British: The American's Guide to Speaking British
effingpot.com
The differences between American and British English, explored by a Brit living in Texas.