I am aware that the usage of 4 cannon armed Spits was small. I know a very few were based at Malta and I also know that some of those had two of the cannon removed for various reasons.
I found this whilst browsing today. Caption was
"4 cannon armed spits over the Adriatic" Looking at the exhaust stacks I'd say they were MkV's?
Apart from Malta and the above, were there any other examples of use, neglecting prototypes, of 4 cannon armed Spits during WW2? Just wondering, I don't expect to get them in AH

Gatso