You need to apply thematics for the different road classes and they are separated into Local, Regional and National - so you can apply zoom layering. They have also split the buildings into 2 resolutions but adopted a different naming convention. But all the rest have different resolutions (local, regional or national) within the same layer. Look closer at the Woodland layer - there are 2 polygons for the same wood!! Therefore you would need to run conditional queries to separate them. However, running so many queries for national data just kills the workspace dead.
I encourage you to send feedback...