No interactions present.
The mirrors on the left hand bird do not appear to be correct for a young Black-headed Gull - have you considered a second winter Mediterranean Gull?
I looked at it, but I was not sure, so i went for Black headed Gull.
I think I would join with David Jardine is suggesting that they are both med gulls.
Both Med Gulls
You are right. Thank you for helping me.
Lat/Lng: 54.9089, -5.036
OS grid ref: NX054613