Hi Paul,
It's a nice shot of the Essex Skipper

, showing very well the linear scent mark on the wing, which distinguishes this species from a male Small Skipper. Separating the females is a lot more difficult and frequently leads to debates on these pages! The lively little 'non-Skippers' you photographed are more brightly coloured than any British skippers. The Brown Argus often causes confusion, mainly with the female Common Blue, so it's worth learning about the differences from these.
Mike