Dr Julian Lewis: May I make a practical suggestion? We sometimes hear that the overseas aid budget struggles to find the best possible ​causes in which to invest our 0.7% of GNI. Could the rules possibly allow for an investment from that funding in the sort of research that is necessary to find a cure for TB?

[Nick Herbert: My understanding is that they already do. That is a good example of how we already – although we need to do more – deploy the resources that are available to us. Indeed, the commitment that we make as the second biggest donor to the Global Fund to Fight AIDS, Tuberculosis and Malaria – £1.2 billion in the last replenishment – has been made possible because of the increase in aid spending and the target that has been set. ... ]