Graylings

[E.T. Povall]

I have been studying grayling populations in Shropshire, England for the last 
couple of months as part of my MSc project.
Graylings seem to have been somewhat ignored, especially in recent times.
Does anybody out there have any recent information on graylings, specifically 
in Britain? Or for that matter any seminal work that i might have missed out 
on?

thanks in advance for any help
Ed Povall.