The UK map seems to have one major problem and a more minor one.
The major problem is that the bottom "region" of Scotland has been put into England. This is visible on the example map when you hover over either territory: http://www.infosoftglobal.com/FusionCharts/GalleryMap.asp?mapName=UK
A second, more minor, problem is that the regions on the UK map don't appear to correspond to "normal" regional divisions.
The UK is obviously divided into its countries: England, Scotland, Wales and Northern Ireland. Some maps include these divisions but also divide England into regions (as shown on this Wikipedia page).
The FusionCharts map of the UK includes the English regions, but the border between the East and South East regions is wrong, at least compared to every other map of England's regions I've seen. In addition, the three regions of Scotland on the FusionCharts map don't appear to have any real basis (again, Wikipedia).
I'd suggest that if the UK map is going to be divided, it should be done into the four constituent countries, or into the four countries plus the regions of England.