I suspect part of the problem is that Eng-er-land is so large, in comparison to the other Home Nations, that they don't have a unified National identity. There is no English national dress, is there a national dish? A traditional dance?
If you were to ask a Geordie, a Yorkshireman, a Cornish man and a Man of Kent (or a Kentish man, they can't even agree on that and they're from the same county....) what a quintessentially English dish was, would they agree with each other?
Morris dancing is very English isn't it? But then again dancing around with bells tied around your legs, and hitting each other on the head with a piece of wood is hardly stirringly patriotic is it?