No interactions present.
As it is a JPG you can lighten it easily to bring out some of the detail. Either on Microsoft Picture Manager or the camera's own software.
These can still be seen, which rules out most other species
All the best
I have purposely left the photograph as it is because this is how I saw the bird. The bird was viewed for about 15 minutes and it did not move in that time but remained in the shadows. (It calling helped in identification).
Lat/Lng: 51.0563, -2.7348
OS grid ref: ST485288