Stig......... this is Kaki's photo, a Mk.II almost certainly AL579; not "M" though, it's "C" or "G" (most likely as its Goofy). 159 Sqn. had a Mk.II "M" serial AL550.
The one in Andy's colour photo is a B.VI.
https://www.facebook.com/groups/b24b...0958767852121/
Regards Nick