Vickers did offer a slow cruiser to Norway in the 1930s, the plan for it is in Friedman's 'British Cruisers'. There were numerous sales attempts to Spain too via the Vickers-owned yards. I'm sure some those based on the Cs and Ds and Es probably didn't look too different from these.
These look great Krakatoa. I just love the way you and JSB kitbash up some great ideas.
I'd love to have a crack at the Ds and Es some day but realistically it could be years. I know your not keen Krakatoa, but I think you've got the skills to draw a real-life ship from scratch. Making a good kitbash is almost as much work as drawing from fresh.
and at the same time Norway had a plane to build a new coastal defense ship (or ass it was called at that time, artillery ship), there is an reason for Norway didn't go for it. in 1930 The Norwegian Navy was starting it's project for new ships, and they had economy to get a cruiser... but they did go for a couple small destroyer, one large destroyer, one large minelayer (among the biggest in Europa at the time)...
Vickers can even offer an battleship for free. Norway would not go for it at all. for the simple reason that Norway operated under an strategy of using the Norwegian coastline as there advantage. Just think what would happen if you had two top modern Coastal defense ships in 1940 hiding in fjords, forcing the larger German ship in, trapping them in a narrow fjord... Do that with an larger cruiser..