The Spitfire in Gove's pic looks like a genuine MkIX to me, in my experience the replica Spits look and sound what they are: nice little aeroplanes but not the real deal. The replica has a three blade prop, the one in the pic has four.
When walking around the quieter parts of eastern Croydon I occasionally can hear one of the Biggin Hill Heritage Spitfires get airborne and even at a distance of five or six miles the sound of the Merlin is unmistakable. Mind you when they get their ME109 flying will I be able to tell the difference between a Merlin and a DB605 at that distance? ☺