Actually, Americans never use "naught". I see it in books written a hundred years ago, but you would never here it now. They use "zero" or say "oh", like the letter 'o', if they are giving phone numbers. The British, at least the sports announcers, will say "nil" in giving scores - "Britain defeated France two to nil" I honestly don't remember how often it is used in normal conversation. Can of my British friends enlighten me on this? [Note: David Buckingham just did]

I'm English and I personally say either 'naught' or 'zero'. We also say 'nill' as well, but not when reading out a number, only when the whole number is 0.

It's the other way round. The British use "nought" and the Americans use "zero".

Nought is another way of saying zero