I really do not see how it is possible England comes off as being uke. He's a very strong character in canon. And he never came off as the submissive type. He's the bloody United Kingdom! Personally, he always came off as the strong romantic type who gently leads like a, well, gentleman.
So... if I may join? I despise the very idea of England being portrayed (or played) as an uke. Of course, I need to upload my own works of England.
I actually dislike the seme/uke ruling as a whole, but that's for another story...