Whatever you may find that's not already included in this Wikiscape Catalogue is of interest, so simply send a pm and we'll add them... And the more custom files, (.grf's), available from a specific region, the more likely we separate them for a category of their own...
However, there won't be a U.K. region though, but more likely a Great Britain-region, incl. both the U.K., Scotland and Ireland...
Another thing to keep in mind is whether or not more identification symbols should be added or not. Currently each item listed consists of four, (4), different ones; downloads, official website, read-me file, and development site...