Scarce Chaser Dragonfly

Saw this at Milton Country Park today while on a guided dragonfly spotting walk. I was very impressed with the talk which went before it. I'd not realised there was so many different varieties of dragonfly in the UK (about 40) plus "drop ins" from further afield and 20 have been spotted in the Park over the years so I'm lucky to have such a dragonfly rich environment right on my doorstep.