Actually....
Well, actually there was an RN Series 3 HAR Mk 9 that was the Gnome engined version, complete with twin Tubes underneath - it was a bit of a surprise to climb into, or onto, when you were used to the Mk10!
I don't know what it fired from them, or how successfully, but they won't have been rocket tornadoes! (oops!)
I have seen one at Duxford I think! Ugly Blue thing.
Yes - I do like aircraft... and No! I am NOT a spotter!
I was taken for a flight in a Tiger Moth there once so did the museum thing too.
PN - Your scrapman wouldn't have been in Lincs would he?