Hang on a minute.... Sittingbull to Spitfire? mmmm Sittingbull energy drink please log in to view this image is (or was when I was last in England) sold in Lidl, so was assumibly available in Lidle in Southampton; where Spitfires came from!
I hold my hands up, good spot, but you could have also gone for the more obvious 'beverage' link, what with Spitfire being sold on tap the length and breadth of the country. However, this one's coming right back at you, cos King Harold, well, let's face it, both he and the Spitfire are etched into British folklore for their attempts to repel invasions from Johnny Foreigner.