To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for British English Dictionary by cheap road bikes
Rated 5 out of 5 stars
This is definitely helpful with trying to learn UK spelling. As for switching back to US english, just right click a word, go to languages, and select UK.
This review is for a previous version of the add-on (1.19.1).To create your own collections, you must have a Mozilla Add-ons account.