We must certainly make sure that this kind of fire does not ever happen again.
But, to do that, we need to know whether the cause was that the materials regulations inadequately protected against such fires, or whether there was a failure of compliance or enforcement of the regulations. We need proper answers on these questions, so we don't think that we have solved the problem when we are actually changing the wrong thing.
This is exactly what the public inquiry should bring to light. We therefore need to press forward with that inquiry, and then make sure that whatever it recommends is fully and rapidly implemented.