High Speed Rail (Preparation) Bill

On a point of order, Mr Speaker. I seek your advice on where the £10 billion of extra funding, which was announced for HS2, has come from. The House has divided on important matters without being aware of whether the extra £10 billion will come out of existing budgets—meaning the curtailment of existing projects—the deficit or the comprehensive spending review. I was keen to ask the Minister about that while he was at the Dispatch Box, but as you saw, Mr Speaker, he was keen not to answer my question.