The Lesser Whitethroat (Sylvia curruca) is always a target species for me, as I never get to see it very often and this is the first time I have been able to photograph it with any success.
I believe this one I observed to be a first year male.
(with the usual caveat regarding my limited bird ID capabilities).
This one is feeding up in preparation for its long journey to the South of the Sahara in Africa. I read that when it migrates to UK in the Spring, it does so via the Eastern Mediterranean and from there completes the journey to England in one flight, but on its return journey now it will stop off in Northern Italy.