My hon. Friend is right to raise that point. Let me refer again to the scheme to help Afghan nationals. Afghanistan is a good example of a clear conflict zone. Many Afghan nationals, such as interpreters, help British forces, and we owe them a duty of respect and have a responsibility to them. I had already made changes a few months ago to welcome more of them to settle in our country, if they wish, and from a safety point of view we must help in such cases. Under that scheme, they should not have been told that this was mandatory. Once the system is explained, people might believe that providing DNA will help them and then choose to do so. In those cases involving Afghan nationals from that conflict zone, given the work they did for this country, we can even look to pay for that, but the key point is that the process should always be optional for them.