Housing and Planning Bill

I would like some clarification on the Minister’s answer about the difference between “higher” and “high”. If as a result of the Minister setting the percentage at “higher” the property is sold, what is to stop the Government—not necessarily herself; it could be a subsequent Minister—coming back and using the regulations to say that the band below that is now the higher-value property, so that there is a continuous accretion of cuts on local authority stock in order to continue to produce more and more money for housing association discounts?