But is the proportion actually, rather than just apparently, any higher than anywhere else? Maybe it is, maybe it isn't - I've no idea, and I'm not aware of any sound evidence one way or the other. I'd be very wary, however, of drawing such a conclusion simply because of the volume of media and other public discussion of the issue.
I am unaware of any actual scientific study on the issue, I am all too aware of the constant revelations regarding the sexual proclivities of so many famous English men.
You can hardly swing a dead cat amongst England's famous men without hitting a homosexual or a "bi".
Did you know Ian McKellen (Dumbledore , Gandalf, and Magneto) is queer?