I was recording hoverflies, butterflies, bees, leaf-miners, plants and lichens. I think my final contribution was over 100 species, with several of them being new to me.
This is the wonderful hoverfly Chrysotoxum arcuatum:

Green Hairstreak butterflies were very numerous around the edge of the moor area:
I noticed that this male Orange Tip was nectaring on Bush Vetch, so I chanced a few shots, hoping to get the long tongue in action:


A few plants of Bog Bean were dotted around walkable bits of the boggy area:
During the previous night, a number of moth traps were laid across the park. These are a few of the species new to me:

Knot Grass - Acronicta rumicis: