I found hundreds of these mites congregating on the side of my car. Photo taken with X5 macro. Original size 1-2 mm
No interactions present.
A freshly emerged Garden Spider (Araneus diadematus) spiderling. Keep watching and in the next few months it will get browner and develop the white cross on the abdomen. Have you seen a cluster of them?
Thanks DJ. Yes there was a cluster of hundreds of them in a diffuse web on the side of the car. Blowing up the images also revealed a lot of very very much smaller spider-like insects
Thanks again for ID and comments - much appreciated
Lat/Lng: 52.0, -0.9
OS grid ref: SP8138