Clifford had been in hospital after suffering a heart attack in prison.
The former celebrity publicist Max Clifford has died at the age of 74.
Clifford, who was serving an 8-year prison sentence for historic sex offences, collapsed at Littlehey Prison last week.
Former celebrity publicist Max Clifford has died aged 74 after collapsing at Littlehey Prison in Cambridgeshire
— Sky News Breaking (@SkyNewsBreak) December 10, 2017
Earlier, his daughter Louise explained how Clifford had taken ill.
“It was just too much,” she told The Mail on Sunday.
“Next day he collapsed again and was unconscious for several minutes – though he doesn’t know how long.
“He was seen by a nurse, who insisted he must be transferred to a local hospital.”