We have introduced it at this point because recent jurisprudence has crystallised our view in this regard. As I say, we want consistency between common law cases and tax tribunal cases. A degree of volatility has been created in terms of tax revenues that none of us should welcome. In short, the answer to the hon. Lady’s question is that the reason is recent jurisprudence.
Let me give the right hon. Gentleman a little more detail in response to his question about rare cases. HMRC is aware of fewer than 10 strands of litigation where tax issues are being handled through the High Court. That is not to say that they would necessarily all involve interim payments, but I hope that that gives some sense of the scale of the issue. As I say, it is a procedural matter.