Sanderling with Grey Plover.
No interactions present.
Basing that on the two birds in profile, which seem to have the jizz of Dunlin, with darker upperparts, and one shows a longer bill, I think. Detail a bit fuzzy, though!
My Flickr photos...
Not a great image for detail but they do look like Dunlin to me.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Lat/Lng: 50.66934, -1.97025
OS grid ref: SZ021855