Thank you, Momoe.
The Welkin was of course designed to counter a contemporary threat.
By the time it had been developed to a usefulness, that particular threat had waned.
The exigencies of war, eh?
I must say, though, that both the DH Hornet and the Grumman Tigercat, (IMHO), rate as the most visually and aurally stimulating
piston twins ever designed.
So there.