This is a very important area, and the UK has a good record of research on brain tumours. My hon. Friend is absolutely right that the people who are raising funds for this important cause should be commended. As he said, many of them will have had personal experience of brain tumours, in one way or another. It is important that we recognise that there are many killers out there that often do not receive the publicity and support that other causes get. We should recognise their importance and commend those who are raising funds.