The answer is that the Government will keep the situation under review and see how many places are required, because the effect of the Bill, when it is passed through this House and the other place, will be to deliver a deterrent effect. Furthermore, those who cross the channel illegally will be removed within 28 days, as is planned in the structure of the Bill. Therefore, the need to detain people will be kept under review and, it is hoped, be limited in number.