These three are poor shots taken a long way away from my 200 lens. I think the first is a Plover, perhaps Grey, in transition from winter to summer. Second is a biggish white, same size as a Great Western Egret or larger, but doesn't quite
look right - bill a little thicker perhaps (poor definition though) and it's 'hunched back' with a black edge to the fore wing ? The third I think is a Swift but looks a little brown to be a Common Swift?