I point out, really, to the Member that there are actually very few properties in the top band, band I—so, only 5,400 of those across the whole of Wales—and those are unevenly distributed, so simply creating an additional upper band or a mansion tax, or some kind of additional tax on those particular properties without changes to the wider system would have limited benefits. So, we are looking at the wider system.

In October, we published a detailed update on reforms to local taxes and local government funding in Wales, and I intend to publish a further update on this in the autumn. But we are examining options for medium to longer term reform of local taxes to ensure that they are designed to best meet the needs of people in Wales. And we obviously will want to take a progressive and fair and transparent approach to local taxation, which provides funding for local services.

So, to give you a flavour of the kind of work we are undertaking, we are undertaking a substantial research project using external expertise to understand the impact of universal credit on the council tax reduction scheme, patterns of debt and rent arrears in Wales, and this research is essential in informing our legislation that supports council tax payers in the coming years. The Institute for Fiscal Studies is undertaking an in-depth assessment of the impact that the revaluation and rebanding exercise could have on Wales's domestic property tax base, if one were to be carried out, and, through this, we’ll be able to understand the viability of making the band structure more progressive. But we certainly can't do that without the kind of information that would allow us to take informed decisions.