Small flock of 4-5 birds probably blue tit size feeding in low greenery at the edge of the estuary water
No interactions present.
Although I know that bearded tits are uncommon I do not know what else they can be. Even so, there appears to be a blue flash on the wing in photo 1.
Proposed ID really based on Image 2.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Bearded Tits are almost exclusively found in reed beds, though I have seen them in fields of maize, too, at times when they erupt. They have longer tails, yellowy brown with a rounded end. Quite different once you have seen them.
My Flickr photos...
Lat/Lng: 51.7267, 0.6927
OS grid ref: TL860065
Feeding on low greenery at the edge of the water in the River Chelmer as the tide was rising.