This would be a new one for us if we've got the ID right. Sorry about the pic quality (poor light, lots of shadow). At first sight the bird looked almost completely grey on top and white below - but we think it's a Lesser Whitethroat.
Will post a second (equally poor) shot showing a different angle.
Cheers
helenh
Will post a second (equally poor) shot showing a different angle.
Cheers
helenh