We have reason to believe that the missing woman has been murdered and we'd urgently like to speak with Jack Wall in connection with the inquiry.
It is likely he may be in the Stevenage area, but he could be further afield.
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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.