Defence Supplementary Estimate 2021-22

My right hon. Friend, I and probably everybody present in the Chamber have been calling since we have been Members of Parliament for much higher defence spending. I think that is accepted. However, does he agree with me that once that higher level of spending is determined, we should not necessarily link it to GDP, because economies can go up and down? There have to be real-terms increases once that higher figure is decided, otherwise the armed forces will not know where they are and it will be difficult to plan.