I havn't been to martin down so would be interested in going there some time.
To set the ball rolling and as i live just over the border only for those who are
close, i will be at the control tower Greenham common 1pm Sunday (28th) to
look for silver washed fritillary and white admiral (and what ever else turns up
hopefully lots). can't promise succes but i know where to look.
The following Saturday (july 4th) weather permitting i am going to stockbridge
down to look for the white letter hairstreak ect.
Cheers J.P.