It's a vague imitation af Gerald Coulson's painting Guardian Spirit, which has a Spitfire Mk.I (or II) of 92Sqn (most of his paintings of Spitfires feature this squadron) being shadowed by a ghostly SE5A off its port wing...

Here's the real one,

It's just occured to be the combination of Seafire and Triplane is quite apt, as I believe the Sopwith Triplane was used by the RNAS in the Great War, the forerunner of the FAA
Charlie