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Image 3 looks like a Swan Goose (Anser cygnoides), the others appear to have an amount of Swan Goose in them.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
I agree with Chris on both counts
I agree with Chris & Ian
I think they are Greylag x Swan Goose crosses. Although having a general Greylag appearance (except image 3) the knob on the base of the bill and the dark streak from the back of the head down the neck says Swan Goose.
Lat/Lng: 51.1995, -2.836
OS grid ref: ST416448