Defence Secretary Philip Hammond told ITV News it was not for him to judge whether Sgt Danny Nightingale should have been sent to prison.
He added that the Court of Appeal "acted swiftly" in this case which showed the system was "robust".
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More than 80 people are refusing to leave their homes on the Chalcots Estate despite an evacuation of the estate's tower blocks.
Northern areas will continue to see a few showers in places but generally Sunday will be a brighter day with some decent sunshine.
Stormzy has used his set at Glastonbury to call attention to the recent Grenfell disaster and demand answers over what happened.