The sad news was shared by Theo’s husband, Alex, in an Instagram post, describing her as an “incredible person”.
Sharing a picture of Theo, Alex wrote, “It is with great sadness that I share the news that Theo passed away peacefully surrounded by her family on Wednesday afternoon.
“Neither she nor her medical team foresaw this happening quite so quickly.
“She was an incredible person who fought hard for her family, friends and raising awareness of this cruel disease.”
Antique Roadshow star Theo Burrell dies aged 39
The touching tribute added, “She saw life events like her son’s first day at school and her wedding that a little over 4 years ago we thought she’d never see.
“The cancer community provided so much comfort and strength to her in her darkest moments.
“But most of all it provided hope, and I think what she would want most of all is for other people to find hope in her story.
“Hope that the statistics aren’t gospel and that one day they’ll be very different.”
In June, Theo had shared a post marking four years since she had been diagnosed with glioblastoma, a malignant brain tumour, adding that she had surpassed the 12-18 month timeframe doctors told her she had left to live.
During her illness, Theo became a Brain Tumour Research Patron in 2023, campaigning in Holyrood and Westminster on the importance of brain tumour research funding.
The Antique Roadshow star also helped launch the charity, Scottish Brain Tumour Research Centre of Excellence, which aims to create new treatments for glioblastoma.
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Friends and followers of Theo have shared tributes to the BBC star, as Dan Knowles, Brain Tumour Research CEO, said: “We are heartbroken that we have lost the phenomenal, determined and truly inspiring Theo Burrell to this devastating disease.
“She was always very open about her prognosis and knew from the outset her cancer was terminal, but she was absolutely determined to make a difference for others.
“She constantly inspired us with how big her heart was and we will continue on our mission, driven by everything she taught us.
“Our thoughts are with her family, her friends and with all those who had the privilege of knowing her.”
