In 2015, the Building Research Establishment said that we did need more data on this in Wales. We need a national study to see the extent of the problem. I think the issue here is the current properties that have undergone this, and it’s been defective. Because it’s at the heart of much of our refurbishment strategy, energy reduction, Warm Homes—it is really, really important that we get to know the scale of this challenge and put it right as soon as possible, and obviously ensure that those that are responsible meet their obligations.