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Is the bird in the first picture the same as in the others? It shows features of Marsh Tit, like a dusky rear to the cheeks, glossy cap and no apparent pale wing panel. It's not easy to judge the pale spot on the bill, though.
Agree the others are Willow...and nice pictures!
My Flickr photos...
Lat/Lng: 54.9799, -4.0054
OS grid ref: NX717668