In court, the clerk spent 10 minutes reading out 31 charges.
Bush – who was wearing a dark grey suit, white shirt and mauve tie – showed no emotion as he entered his pleas while standing in the glass-fronted dock.
His left hand was gripping his right, and his voice was quiet as he replied “guilty” to each charge.
About a dozen relatives of the victims were in the public gallery.
Prosecutor Chris Paxton KC told the court there would be up to 240 victim impact statements from people that had been affected by the case. These would be provided before the sentencing hearing.
“The fraudulent trading relates to funeral plans involving over 150 individuals,” he said.
Speaking outside court, Det Supt Al Curtis said the “utter devastation and emotional harm cannot be underestimated” in this case.
He said the distress Bush caused families was “simply unimaginable” and suggested “irreparable” damage had been caused to communities.
In respect of the fraudulent funeral plans, Curtis said Bush had “betrayed trust”.
He ended his statement by praising the “extraordinary strength in unimaginable circumstances” displayed by the families involved in the investigation.
Bush previously admitted 35 offences of fraud by false representation and another of fraudulently running a business, relating to the sale of funeral plans.
But he had denied the 30 counts of preventing a lawful and decent burial, and one of theft relating to charitable donations. He had been due to stand trial from 5 October.
