He has been awarded higher rate care until 2008! The payments have been backdated to April when we first requested the forms and so I now have an extra £1500+ in my bank account.
As it was so difficult to describe how his behaviour was different to a 'normal' 2yr-old I expected either nothing at all or lower-rate if we were lucky. I think I'm still in shock!
Anyway, a huge thankyou to all of you who helped me to explain how ds2's needs are different to other children of his age and also to everyone who's put up with me moaning for months about the loooong wait.
And yes, the Rule of Davros was proven yet again to be correct as the letter arrived on a Saturday.