If you cannot see the Site Map/Menu Bar on the left; then your search engine may have directed you to this page only. To go to the Home Page, click http://www.mycetes.co.uk
For obvious reasons military installations were never shown on Ordnance Survey maps, but what I can show you from the following 4 maps is the change in the area and in one the footprint of the buildings can be seen.
The 1878 map is on the left and the 1908 map on the right. The field shapes are still the same today.
The aerial map on the left was downloaded from the internet but was not a Google map. However it shows the footprint of the buildings that were demolished leaving only the concrete foundations visible. The map on the right is a Google map of 2017 showing the site as it is today.
I found this aerial photo on Facebook; so I acknowledge that it is not mine; but - it does show the POW camp layout. I guess it is from the 1980s.