I bought Scotland, Wales, and England shortly after they came out.
In the past week I've re-installed Prepar3d on it's own SSD.
Bit by bit, I've re-installed most of my programs & scenery. Today, I was planning on re-installing the UK.
Luckily, I waited - no updates to track down.
Wales is released fully patched up with the 2 service packs (Patch 001 released 10th March 2013 & Patch 002 released 29th June 2013) and uses the version number 1.20.
Scotland is released fully patched with its 1 service pack (Patch 001 released 1st October 2013) and uses the version number 1.10.
If there's one problem that I have with the Orbx updates, it's that you have to search for, and install, the updated in order.
If you have a lot of Orbx scenery, that can be a VERY big task.