English TLDs
As ever regarding English identity/identification, regional identification tends be stronger than national at least . A .eng domain would only really come to fruition if there was a formal English Parliament or other England-specific legislature/governing body - but we'll save UK constitutional issues for another day.
I'd consider regional campaigns to have a higher chance of success - probably with Yorkshire and Cornwall towards the top of the list. Traditional County/Heptarchy identities might make sense for some places, but city names might be more popular where regional identity isn't so strong(Eg .brum/.birmingham over .westmidlands/.westmids).
Biting the hand that feeds IT
