Dark-green Fritillary

This species is perhaps best identified by seeing a very strongly flying brown butterfly zipping past you and never settling close enough to look at! And when they do settle, they often close their wings. This one, though, settled with its wings mostly open, maybe something to do with the strong wind blowing at the time. For the same reason, I didn't dare move to get a more 'square-on' view because it could have been blown a long way before settling again.
Malcolm