My Lords, as I said, they have a shelf life of a year. I agree with the noble Baroness that people need to see the HIPs. One of the things that has not succeeded is that estate agents have not been ensuring that the buyers, or the sellers, see the HIP. We have changed the regulations and removed the concession on first-day marketing so that from 6 April people will need to have a HIP when they put their house on the market. That will help the buyer and the seller to know that the HIP is in place and what it delivers. We should also remember that well over 2 million energy performance certificates have been issued through HIPs, all of which can save on costs. We have also seen a drop in the cost of searches of between £30 and £120. So, there are definite benefits to HIPs.