There is a lot at stake this week for Sophie Blake, a 52-year-old mother who was diagnosed with stage four cancer in May 2022.

As MPs vote on whether to change the law to allow assisted dying, Sophie tells Sky News of the day her life changed.

“One night I woke up and as I turned I felt a sensation of something in my breast actually move, and it was deep,” she says, speaking from her home in Brighton.

“Something fluidy, a very odd sensation. I woke up and made a doctor’s appointment.”

Sophie underwent an ultrasound followed by a biopsy before she was taken to a room in the clinic and offered water.

“They said, ‘a hundred percent, we believe you have breast cancer’.”

But it was the phone call with her mother that made it feel real.

“My mum had been waiting at home. She phoned me and said ‘How is it darling?’ and I said ‘I’ve got breast cancer,’ and it was just that moment of having to say it out loud for the first time and that’s when that part of my life suddenly changed.”

Sophie says terminal cancers can leave patients dreading the thought of suffering at the end of their lives.

“What I don’t want to be is in pain,” she says. “If I am facing an earlier death than I wanted then I want to be able to take control at the end.”

Assisted dying, she believes, gives her control: “It’s an insurance policy to have that there.”