Jo Wood claims Roxanne Pallett was "always playing up to the camera" on 'Celebrity Island with Bear Grylls'.
The 63-year-old model says the former 'Emmerdale' actress - who recently accused Ryan Thomas of assault on 'Celebrity Big Brother', only to back-track on her comments and apologise for her actions after leaving the house - was "luckily" only on the island for four days.
She said: "Luckily, she was only there for four days. She was always playing up to the camera."
Jo - who was previously married to Rolling Stones rocker Ronnie Wood - claims Roxanne was "suddenly in a terrible state" when she opted to depart the show, which was filmed in May.
She told The Sun's Bizarre TV column: "There was a lot going on, then suddenly she was in a terrible state and was leaving."
'Celebrity Island' sees several famous faces attempt to fend for themselves for two weeks after being dumped on a land mass in the middle of the Pacific Ocean, and Paris Lee and Montana Brown also departed the series.
Former 'Waterloo Road' star Roxanne - who quit her radio show on Minster FM and panto 'Cinderella' earlier this month following her 'CBB' fallout - left the island because camp bonfires gave her traumatic flashbacks.
The 35-year-old actress' spokesperson recently said: "Roxanne, her grandmother and mum were involved in a house fire in the middle of the night, when she was 16.
"Roxanne and her family were rescued by emergency services after being trapped in the house for a substantial amount of time.
"Roxanne suffered smoke inhalation and her mum was hospitalised for months as she lost her sight, this later returned after lengthy medical care.
"Her house was completely burnt out and Roxanne and her family lost all of their belongings."
Martin Kemp, James Cracknell and Anthony Ogogo also star in the upcoming series.
Tagged in Jo Wood Roxanne Pallett