Their iOS app is fantastic as well, it's £18 per year but you get not only full updates during that time, international maps (download the ones you need before

Their iOS app is fantastic as well, it's £18 per year but you get not only full updates during that time, international maps (download the ones you need before travelling, and no need to have data access whilst there), traffic updates and fixed and mobile speed camera data (with the ability to report a mobile speed camera when you see one). The other nice benefit, that Google has only recently added, is they have data about the speed limits on the road you're travelling on, which can be a godsend in certain circumstances.