Why do most british houses have such small rooms and no closets?

We just PCSd from the states to England, and I love it, but its so weird to me that most all houses have such small rooms, and most that we have seen do not have closets. To me, I'd think people would prefer larger rooms, and id think closets would be a must! Is there a purpose behind this?
Update: Of course I haven't been to EVERY house, but when you have looked at several, and people you know live here and tell you the same thing that most rooms are small with no closets, it just makes you wonder why. I don't know why you had to make me look like a jerk for asking a question.
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