Denise Charlesworth-Smith, who lives in Brookville, near Methwold, has told Daybreak that her father, Phil, was placed on the controversial Liverpool Care Plan by a Nottinghamshire hospital without any consultation with her family.
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Nigel Farage warned on Friday Britain was "far less safe" and exposed to Cologne-style sex attacks because of open-door immigration.
Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
Two brothers have been arrested on suspicion of murder after their parents were found dead in their own home over the weekend.