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The dumpy body, with a slight hunchbacked look, in combination with a thinnish neck and slightly droopy, mid-length bill points to Ruff.
Redshank has a straighter bill, redder legs and is greyer. Ruff varies in colour, but often has quite a pale head and neck compared to the darker body.
My Flickr photos...
Lat/Lng: 51.74, -2.405
OS grid ref: SO721046