On Acid grassland red spots on black
No interactions present.
Although care should be taken in separating Narrow-bordered and Five-spot Burnet, I wouldn't go so far as to say that they cannot be distinguished as adults. This example shows strong characteristics of Narrow-bordered (subspecies latomarginata though not insularis which is the Irish subspecies).
To note there was a picture when I provided the identification above.
Lat/Lng: 53.6, -1.9
OS grid ref: SE1222