Please forgive me for the thread hijacking. I was looking at hour "Spiteful" posts from around seven years ago, and it struck me that truth is imitating fiction. Your Spiteful resembles a paper Sea Spitfire project from around November 1939 with a Griffin engine and raised canopy, and four 20mm cannons. Fifty were ordered off the drawing board, with deliveries by July 1940. Personally, I think that was optimistic, but the order was quickly cancelled. Also, there was a ground attack version of the Spit on paper again, the type 312. This also carried four 20mm cannon and the cockpit raised six inches. This is all real world.
The paper Sea Spitfire project is, I believe, the "Folded Wing Spitfire" mentioned in the Morgan/Shacklady book in the section on the Seafire. The discussion around this does mention both a Griffon Engine and an order of 50 in 1939. It does not however seem to mention/show a raised cockpit or 20mm cannon.
Later on, there is also a mention/image of a Single Seat Fleet Fighter NAD925/39 derived from the Spitfire F Mk.IV which also has the Griffon and folded wings and does appear to have a slightly raised cockpit although no mention is made in the text. It also has a wing with a straight leading edge and gull wing. It also does not show 20mm cannon:
Finally, there is a version with 20mm cannon but with elliptical wing and V-tail:
The ground attack Type 312 is also mentioned though briefly:
BTW, does the Shacklady book have anything in depth on the Supermarine 333? THis was a project that was eventually filled by the Fairey Firefly. The books I have (Buttler's old and new British Secret Projects and Beyond the Spitfire) imply the wing was simplified compared to the Spit wing. It does away with the curved leading edge, yes. However it has a gull wing, which pretty much defeats the purpose of simplification.
Also, are there any pictures of the planned Malinowski wing?
The Type 333 is mentioned with multiple images:
As to the "Malinowski wing", I cannot find any reference - are you able to elaborate?
BTW, apologies for the crude images - they were taken using my phone in bad lighting conditions.