Common Darter (i think)

I went to South Weald Country Park to have a look around today but apart from the deer and a Grebe with chick there wasn't much to see.  So on the way home I diverted to Phyllis Currie Nature Reserve and played with the dragonfly. I was only there 20 mins before the heavens decided to open... oh well, it was 20 mins well spent :)