I did see a series of photos taken at Vane Farm RSPB reserve of a WTE killing a Buzzard last winter. Can't remember which site I saw them on.....If I can find them, I'll post a link.
Just remembered, those were the ones that i saw!
The other ones i saw were taken somehwere in scandinavia. Two eagles against a buzzard, which suffered serious scarring before someone ran in to save it. I cant remember the site though. Shame, it had some really good photos.