No interactions present.
I'd say more likely common blue but not sure
Yes, although the photo is blurred it looks more like Common Blue than Holly. Also (and this is not 100% reliable distinction), you are more likely to see Common Blue down in among grasses like this, while Holly Blue tends to be up higher around shrubs and trees. But the butterflies don't always follow the rules!
Entomologist and biological recorder
Lat/Lng: 52.0, -0.8
OS grid ref: SP8836