I'm not good on gulls.
No interactions present.
The third picture at least is a common gull.
Is it? Living inland, I see lots of black headed, a fair number of lesser black backed, an few great black backed, and the odd herring gull. Common gulls are, for me, UN-common!
I would agree with Mydaea, image 3 appears to be a Common Gull in winter plumage (yellow legs, speckled neck, yellow bill with black band). The 2 left hand birds in image 1 also look like Common Gulls. The right hand bird in image 1 looks to be a different species and the bird in image 2 I'm unsure about at the moment.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
looks like an immature Common Gull.
All the birds look like Common Gulls - I look froward to confirming these if somebody wishes to submit this id
All the best
Lat/Lng: 52.9508, 0.4939
OS grid ref: TF676421