It's also known that Ronald Lampitt, much admired by geographers and certainly one of my favourite artists, worked in this area of intelligence. His 'geographical eye' and recurring tendency to view almost everything he illustrated from above seems likely to have been strongly influenced by his wartime work, but perhaps also by working with geographers?
https://twitter.com/mildthing99/status/1256611375411073024
Lampitt was recruited by Albert Hugh Smith, who was clearly very close to RV Jones. He later went on to become Professor of English at UCL and acclaimed scholar of Scandinavian Studies and English placenames, so he clearly had geographical interests. Perhaps he had links with Bill Mead at UCL who was also a Scandinavian expert?
There are plenty of examples of Lampitt's illustrations on the Ladyburd Fly Away Home website and social media feeds.
https://ladybirdflyawayhome.com/ronald-lampitt/
During the war he worked in Intelligence and although (perhaps inevitably) the nature of this work is unknown, it is possible that his wartime work helped develop his exceptional topographical accuracy and the ability to animate technical drawings into something visually rich and appealing.
Mike Dempsey's blog post also shares his love of Lampitt and his work.