Common Blue Damselfly?

After overnight rain the air feels a lot fresher. This afternoon we popped up to Cawthorne Camp for a dog walk. This was a Roman Training camp built around the 1st or 2nd century AD. All that remains is earth banks and ditches.

The camp is on Wade's Causeway a Roman Road which then crosses the Moors. It probably linked up to the Roman Camps at Malton (Derventio and York (Eboracum.

As we walked around the camp, ensuring we did not step on any Adders who like to bask on the paths, Stephen spotted some brilliant blue damselflies. They were difficult to photograph as they flitted above the vegetation.

I just managed to grab this shot before it set off again. I think it is a Common Blue Damselfly but am grateful if anyone can identify it.