Small Warbler type with distinct wing bar and slight eye stripe not seen well in shadow, greyish undersides
No interactions present.
Perhaps a Goldcrest?
Alan Brampton (Benson)
just re-read your comment, where you mention an 'eye-stripe' - that might just be the pale supercilium that rules out Goldcrest!
Flickr pics: http://www.flickr.com/photos/72243477@N00/
Lat/Lng: 38.9776, 1.5302