I was in Holland a few months ago, and while I knew the majority of people spoke English to be polite I asked some cashier if he did. He gave me an astonished look and told me "of course, everyone here does." I found it to be true, though admittedly I was just in the touristy areas of Amsterdam for a couple days. Still, if you want to go to a foreign country where pretty much everyone speaks English that isn't Britain/Ireland, I'd definitely recommend Holland.