Hello, I agre with birdboybowley, too:
I see Dunlins (the small ones with round, compact body), Grey Plover (the greater birds), because of contrasting white belly reching quite high up to the breast and general jizz (because of shape?).
As the Godwit is more difficult for me (I hope others can confirm?), I hope you can say something more about this bird, because the islandic ssp of Black tailed Godwit looks different from the ssp I usually see here , and this should be the one that winters in Britain. But after downloading the image and enlarge it, the bill that looked straight in the picture, changed to an uptilted one, and is has become clear (?) that the appearantly all dark tail is in fact a picture artefact. So I agree it looks better for a Bar-tailed (I must admit, that the bird looked better for a Black tailed in the thumbnail. Reason? Dont know)
The hardest bird for me is the bird in the middle front (Redshank? Godwit, with spindly legs due to picture quality with overlit effects making legs to appear slender).