I paused to see what I could find from the footbridge over the main stream through the park.
It was very interesting to see the apparent split in behaviour between the male and female Banded Demoiselles, with the males getting into territorial activity down by the water edge, while the females tend to hold back, often being seen higher up or further back, resting more calmly on the vegetation.
The males occasionally stayed still enough for a photograph, in their finery:
I only found one Black-tailed Skimmer, quite fresh, off the path by the side of the stream, perhaps as the paths were so well-traveled on this warm afternoon:
There were also a few Blue Tailed Damselflies on the vegetation:
Then I moved on to the "Key Conservation Area" pond, where there many dozens of male Common Blue Damselflies feeding and resting on the vegetation 10 m or so away from the water's edge.