Obviously using a tax credit rather than a grant doesn't give you any control over the cost, because you have no idea what the take-up of the credit will be. Since a credit is not capped, it could be higher than what we predicted, but it's very hard to predict the take-up.
The tax credit is available to anyone who has taxable income. As we mentioned, if you have no tax liability, then the credit is not worth anything to you, which means that not-for-profit organizations, for example, will not get any benefit from a tax credit.
What is the best way to address the problem of historic rehabilitation? That question is in your hands. We did not stipulate that.