You don't half talk rubbish sometimes. It takes a small army of surveyors to map something the size of the UK and to keep the data updated
No need to get rude, Mike. Take that to the Flyer forum.
We are talking about aviation charts, not maps of footpaths, bridleways, property boundaries, etc etc etc.
The UK has been surveyed countless times over the centuries. The basic terrain data is copyright-free from e.g. the ONC/TPC charts, and you can get it cheap from the shuttle radar database. There is also extensive and cheap to license photographic imagery.
Times have changed.
I would also argue that much of the detail that appears even on the 1:500k chart is superfluous. I see every little road - does anybody really fly and navigate at 30mph? Some do I know but they can buy the appropriate chart.
Believe me, there is a lot that wil change over the next few years, and the CAA or O/S will not be able to do anything about it. The cat is out of the bag.