Great pics - saw some of them at the spring show - and saw the bouchon last year - it it wierd seeing it an hearing the noise of a spitfire
The Bf 109 started out with a British engine.
Because the DB-601 engine wasn't available yet, Messerschmitt used a Rolls Royce Kestrel engine for the prototype.
That was before the war of course (roughly at the same time the Hurricane and the Spitfire were developed, c. 1935 - 1938).
At Legends, they displayed a Merlin (with a prop in place) mounted on a flatbed carriage that they started up several times.
They revved it up and you could hear that sound all over the airfield. Heaven ...
As a precaution, I changed the ringtone on my mobile phone before I arrived at Duxford (changed it back as soon as I was home again). Because my ringtone is that of a Griffon starting up (Christophe Jacquard's Spit with the contra-rotating prop).... I figured I wouldn't be able to tell if it was a call for me or a real Griffon/Merlin ...