I started using the app this morning and it looks great.
I started to download the UK map data and carried on checking the app out. This crashed the app. I went back in to check on the progress of the map download and it was not downloading. I checked the list of available maps to start the download again and the UK map had disappeared from the list.
2 months ago
That would indicate that the map has downloaded. The UK map is missing from my list as it is already on my phone.