I have updated my statistics that I generate from the ITO world comparison with the OS Locator data set. If you look at the graphs we can see an impressive decrease of unmapped roads. Unsurprisingly, a lot of districts have reached completion - with over a quarter now at 95%!
However, the addition speed of unmapped roads has decreased over the recent months. So there is still 319 days left at current speed. So, keep mapping.