Sorry about the photo quality on these!!
The first two photos were taken at Welney Marshes on Saturday 5th July and the third at Rutland Water the following day.
I wondered if the first photo and the central bird in photo 2 are Bar-tailed godwits - there is a definite upturned bill. I imagine the others in pic 2 are Black-tailed Godwits.
The bird in the third photo has a prominent stripe behind the eye but it doesn't seem to have as much white around the head as a Sedge warbler - or is that just the poor photo).
Many thnaks for any help anyone can give.