Saw the Skua much better yesterday, and seeing as there is some debate on South Polar vs Great, thought some higher resolution (but still qualifying easily as record shots) images might help people. I need both for London, so am happy either way. And world expert that I am, it looks like a Great Skua to me. You can click on the images to make them bigger.
It managed to creep onto my Rainham 2010 list today as well, winner. Like yesterday, it never really came close, prefering to stay in the middle of the river, or closer to the south bank. I was ready for it though!