A cracking day out

My wife and I had a great day out last Tuesday (well I did I cannot speak for her as she had to watch me taking photos for a couple of hours) near Ripon. I got my first ever Clouded Yellow butterfly and dozens of dragonflies were on the wing. I will definitely be back next year. Once again if I have any thing wrong please correct me.

Clouded Yellow Butterfly

Brown Hawker

Migrant Hawker

Black-tailed Skimmer

Common Darter

Other butterflies included Small Tortoiseshell

Green-veined White

Common Blue

Tachinid Fly

Is this a Drone Fly?