This is obviously a good thing. The Guardian series on computers in UK schools is welcome.
And of course the BBC micro is very relevant.
But the reason there is no BBC at BETT is the pressure against the BBC from various sources including the Guardian.
John Connell has got a point.
Google are supporting the Guardian on this one and also have quite a big stand. They may supply some of the central buzz that the BBC used to generate. BETT becomes globalised as UK institutions get weaker, just my impression.