Still haven't found what I'm looking for

I've not posted here for a while as a result of holidays and work but I've turned my attention back to writing now. Not least the writing of my textbook. Anyway, as part I why I have been writing I have been looking for budget info for government departments. It's harder than you'd think to find it in these days of the internet and openness and transparency. I've looked all over the Dept for Transport's website and can't find its budget for this year. I can find budgets for the executive agencies and I can find annual reports but not a budget or business plan for the department as a whole. As far as my book goes I can write about another department but if I were really interested in the DfT's spending plans I'd have to use old technology: I'd have to write and ask for it.