Maps of the UK available in TrenchMapper™
Although there are not many, TrenchMapper™ does include a number of First World War era maps that cover the UK. These can be seen by going to the 'change theatre' option under the 'menu' button.
Here's just three examples of the maps that are available. All are geo-referenced as usual (so are highly accurate 'on the ground').
Scapa Flow
The sinking of the German High Seas Fleet in 1919 was mapped at the time as can be seen on the map of the Orkneys. The screenshot below shows the final position of some of the German battleships.
Warning Districts
The actual purpose of this map is not clear, but it is entitled "Warning Control or Warning Districts. Control and Garrison HQs" and was printed in April 1918
Air Raid
The German air raid of 18 December 1917 was tracked on this map.
Although not remotely as abundant as the maps covering the western front, these UK maps are still of interest.