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Certainly a Chaffinch, but a fully grown female, rather than a juvenile. A juvenile would have smoother, fresher plumage...the feathers here can be seen to be rather worn, as a bird having carried these feathers through the winter.
My Flickr photos...
Thanks for that. I wasn't too sure but, after having a look through some other peoples pics, I can see exactly what you mean about the feathers. Cheers.
Lat/Lng: 53.222261, -4.208273
OS grid ref: SH526717