RAF Miles Magister left at Dreux in May/June 1940

[VoyTech]

A request on behalf of a friend who researches the history of fighting over France in June 1940. According to members of the Polish-manned GC I/145, when they arrived at Dreux airfield in early June they replaced there an RAF fighter unit on Hurricanes. The Brits have left behind a Miles Magister that was still there when the Poles left the airfield and apparently it features in German photographs of French types captured there.
According to "RAF Squadrons" the sole RAF unit to be based at Dreux during the French campaign of 1940 was a detachment of 59 Squadron (Blenheims), but Polish eyewitnesses are positive about Hurricanes.
So, what RAF Hurricane unit was at Dreux in early June 1940?
And what is the serial number of the Magister left at the airfield and subsequently captured by the Germans?

(I also posted the same questions at RAF Commands.)