When I visited this small grassland site near Wadswick in Wiltshire, the wind was up so there were no butterflies to speak of, which is a shame. However the ox-eye daisies, common spotted orchids, quaking grass and occasional pyramidal orchid were wonderful in themselves.
Actually its a bit of a cheat this, as the site is really what's called a permanent pasture, although it is not grazed; it has formed on old ridge and furrow, and is seemingly open common land, but I suspect someone owns it.