I reckon probably 60%, maybe more. There are few things that make you feel proud to be British anymore, I suppose that's about the closest you will get outside of armed forces. You see, you are made to feel like a racist if you fly the British flag in our society, so events like this are something different. Middle England comes into its own then. I personally don't have any affinity for the Royal Family, but putting a commoner (middle class, anyway) in there can only help.