Pensions Bill

My Lords, I wonder if I could just follow up on a couple of points. I thank the Minister for that response and I understand that, certainly at a £10 billion a year price tag, this would be a challenging reform to adopt. Could I ask him—I may have missed it and I apologise if I did—to respond to my questions about pension credit and passported benefits? If the Government are not going to able to bring existing pensioners into the new system can he give us a categorical assurance that pension credit will last throughout, and if so that the passported benefits on the back of that will come?