Karen Spencer's shocking claims over split from Princess Diana's brother revealed amid court battle

Countess Spencer and Earl Spencer attend the Portrait Gala 2017 sponsored by William & Son at the National Portrait Gallery on March 28, 2017
Countess Spencer and Earl Spencer attend the Portrait Gala 2017 sponsored by William & Son at the National Portrait Gallery on March 28, 2017 (Getty)

New details have emerged about how Princess Diana’s brother Charles Spencer ended his marriage to his wife of 13 years, Karen Spencer.

Charles’ current partner, Dr Cat Jarman is suing Countess Spencer for revealing her MS diagnosis without consent to Charles, staff at Althorp, teachers at Lady Charlotte Diana’s private school and one of Dr Jarman’s TV colleagues.

Earl Charles Spencer and Countess Karen Spencer attend the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor
Earl Charles Spencer and Countess Karen Spencer at the wedding of Prince Harry to Meghan Markle (Max Mumby/Indigo)

Now, High Court papers, which are part of Karen’s defence, reveal the shocking email Countess Spencer wrote to Cat back in May, in which she expressed her “disappointment” in her for “turning all of the children’s lives upside down” and labelling her “unbelievably immoral”.

Karen’s defence papers also state that she was informed by the Earl on March 19th that their marriage was over. “He did this by text message,” papers say.

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When Countess Spencer compared notes with Dr Jarman's husband, Tom Jarman, “she discovered that their affair had been going on since at least November/December 2022 when the two of them were together in Norfolk (although more likely since 2021)”, the defence states.

Charles Spencer standing with Cat Jarman
Charles with Cat Jarman at Althorp (Instagram)

Charles and Cat met in 2021, when she visited Althorp House, Spencer's family's ancestral home, to conduct an archaeological investigation.

In her email to Dr Jarman, the countess also warned Cat that she would not be staying at Althorp while she still lived there.

“Not sure what Charles has shared with you of this, but I won't have you at Althorp while I still live here. That is a boundary I intend to hold. It's not fair to me, our daughter, or to all the staff, who are already distraught at the news of our divorce though having to serve Charles' long-term mistress. It's just too much to ask.”

Cat Jarman, a Norwegian archaeologist, co-hosts  The Rabbit Hole Detectives, a history podcast, alongside Charles and Rev Richard Coles
Cat Jarman, a Norwegian archaeologist, co-hosts The Rabbit Hole Detectives, a history podcast, alongside Charles and Rev Richard Coles (TOPSTAR-WJ IMAGES/BACKGRID)

Karen moved out of the family home in November, when she took to her Instagram account to reveal she’s finally found a “temporary rental that can accommodate seven horses, two sheep, four cats, and a dog”.

Responding to Karen’s claims, Charles told the Daily Mail that her’s claims were an “absurd attempt to blacken my name”, while Dr Jarman said she was “shocked and utterly dismayed” and accused the Countess of mounting a “hideous and defamatory attack” on her.

Earl Charles Spencer and Countess Karen Spencer attend day 3 of Royal Ascot at Ascot Racecourse on June 18, 2015
Earl Charles Spencer and Countess Karen Spencer attend day 3 of Royal Ascot at Ascot Racecourse on June 18, 2015 (Max Mumby/Indigo)

Of how Karen claims Charles ended their marriage, the 60-year-old said: “The notion that I would end my marriage by text is an absurd attempt to blacken my name. Karen ended the marriage, after endless threats to do so over the years, in early March.

“She asked me to confirm the end of the marriage in a text on 18 March and my reply that day was a simple acceptance of her decision. I have those texts still, and will share them in court when I clear my name.”