BBC audiences have been left deeply moved after watching a powerful new documentary charting Sir Chris Hoy’s terminal cancer battle — with many saying it was his wife Sarra Hoy who truly stole their hearts.

The BBC One documentary Chris Hoy: Cancer, Courage and Me offers an intimate look into the couple’s lives as the six-time Olympic gold medallist confronts Stage 4 cancer, after being told in 2023 that he had between two and four years to live. Scans revealed his prostate cancer had spread to his shoulder, pelvis, ribs and spine — a moment Chris described as nothing short of “a waking nightmare”.

Yet just weeks after receiving her husband’s devastating prognosis, Sarra was handed her own life-altering diagnosis: an aggressive form of multiple sclerosis. Despite this, viewers watched in awe as she consistently placed her focus on supporting Chris, describing standing by him through his illness as “the greatest privilege of my life”.

Reflecting on her own diagnosis, Sarra explained that the shock of Chris’s cancer had completely eclipsed everything else. She said the world had been so “upside down” by the news about her husband that her MS diagnosis felt like “just another moment in time”, adding that she preferred it that way because “talking about Chris” mattered more.

Throughout the programme, Sarra’s quiet strength shone through — particularly when she spoke about helping their two children understand what their father was going through. Determined not to let cancer become something frightening or taboo, she wanted it to be part of their everyday lives rather than a single traumatic conversation.

She revealed how the children’s fears surfaced quickly, with unspoken worries about whether their father might die, whether they could catch cancer, or whether they had somehow caused it. To help them cope, Sarra came up with a simple yet profoundly moving idea centred around a cherry blossom tree in their garden.

Realising that Chris’s chemotherapy would end around the time the tree bloomed, the family painted a large bare tree and added pink blossoms to it each day — symbolising Chris regrowing and recovering. Sarra said the ritual was as much for her husband as it was for their children, helping them all believe that even when something is stripped bare, it can grow again.

Chris paid a heartfelt tribute to his wife during the documentary, saying she never seeks attention but deserves every ounce of it. He admitted he could not imagine coping without her, calling Sarra “an amazing person”.

Viewers flooded social media with emotional reactions, praising Sarra’s compassion, resilience and selflessness. Many described the documentary as difficult to watch but deeply inspiring, with one viewer saying that while Chris is a hero on the track, Sarra is “a truly remarkable woman” off it.