Actually, in the Tempus Fugative, Wells mentions that 'Utopia' is somewhen in the 22nd Century.
Personally, I have serious doubts as to that date, unless something REALLY serious were to change the world as we know it, like a nuclear exchange or a serious alien invasion or something that would make changes of a 'Utopia' level possible.
James, who has been toying with some ideas about how something like that could happen, should anyone like to hear them, since I probably won't get around to writing them...
