I believe the way to tell them apart from grey seals is the nostril shape when face on.
No interactions present.
Also profile of the face - common seals have a more dished/concave profile.
The animal in the first photo looks like it may recently have had something cutting into its neck - possible monofilament netting.
OU Certificate in Contemporary Science
Lat/Lng: 55.60626, -5.68437
OS grid ref: NR680408
Pulled over and photographed from the beach.