I too think that the English are secure enough not to make a fuss about national identity. I've said elsewhere that the Celtic members of the UK and NI are, to quote James Joyce, a "people enmeshed in their own history" - of which they cannot let go. I freely admit that there have been many, many injustices in the past, but there were nasty things done during the Civil War too. The English have moved on. (Apart from those who feel a need to reenact some of the battles...)
I am married to a Scot, who is proud of being Scottish, and that's fine by me. I love England dearly, but am also British, and equally proud of that. Pity it may not last.