Here's a simple idea. Require every Whitehall department - and each associated quango - to have it's budget annually ratified by the relevant House of Commons select committee. No approval, no money.
"You mean having those we elect, in the legislature, control government spending, like they do in other countries, and used to do here? You mean forcing officials to justify where the money goes?". Yes.
At present, forget all the theory about Parliament controlling the money; it's Whitehall officials that decide. Having the executive decide how much money the executive spends means they spend more money.
It might also give our MPs something useful to do.
It makes government departments doubly accountable and also enhances the role of select committees. Can anyone tell me why this is not a good idea?