IHC, you asked for references? There's a very interesting history of Miles called 'Wings over Woodley' which has some relevant bits of info IIRC. Also much of the local knowledge still extant can be found in or via the aviation museum just on the edge of the old Woodley airfield.
http://www.bigwig.net/museumofberkshireaviation/mba.htm
and
http://www.personal.rdg.ac.uk/~snqfree/ for further links.
hope this helps a little bit...