Multiple family members called for stricter regulatory oversight across the funeral sector as the hearing detailed theft of donations intended for local organizations like Hull's Fishing Heritage Centre.
Beverly Jackson, victim wife, noted her late husband chose the firm due to its local roots before donations in his memory went missing.
"His final wish was to be cremated at Legacy Funeral Directors on Hessle Road. To him it meant coming full circle...
We now live with deep regret for that decision," she said.
Sarah Jane Hepple, victim daughter, detailed the emotional distress of wearing jewelry made from ashes that belonged to a stranger.
"[Bush] discarded her like she was a piece of rubbish. Like she was nothing.
She was everything to us," she said.
Ron Marsh, victim son, said: "It has knocked our trust in professionals like doctors, undertakers and carers. I question if they're all as bad."
Nigel Hotham, victim nephew, expressed horror over the treatment of his uncle's remains. "What human being would allow another human being to be left like that?"
he said.
Prosecutor Chris Paxton KC noted regulatory gaps that allowed the firm to operate without routine inspections for years.
"In terms of enforcement... it is surprising to see a lack of on-site regulation and compliance," he said.
Mollie Finn, victim granddaughter, condemned Bush's actions as inhumane. "There are no words to fully capture the disgust I feel...
Justice must be served, not just for our family, but for every single person affected by this appalling crime," she said.
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The five-day sentencing hearing at Hull Crown Court will continue with additional victim impact statements before the judge delivers the sentence.