a challenge for the bird experts!
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I dithered on this one but your ID confirms what I thought it might be.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Thanks. I hadn't considered that. But the habitat (conifer tree) and behaviour (constant flitting from branch to branch) would also seem consistent with Goldcrest.
Lat/Lng: 54.1, -3.1
OS grid ref: SD3075