Sally Nightingale handed a petition signed by more than 100,000 people to the Royal Courts of Justice today asking them to quash her husband's 18-month sentence for illegally possessing a pistol.
This afternoon lawyers representing her husband Sergeant Danny Nightingale are due to ask appeal judges to analyse the case.
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Despite the use of combustible cladding in tower blocks, ministers were advised that regulations were tough enough, ITV News has learnt.
A milder night across the north than last night, with rain sneaking into southern Scotland from Northern Ireland.
The singer, 31, said on Twitter that she and her partner Jonathan Powell were grieving their loss.