Young patients ring it when they’re in remission or have completed treatment. A sign above the bell reads: “Ring the bell with all your might, ring the bell, remember your fight.”

Chloe, mother of Ava, 4, who rang the bell on Thursday, said: “For us, the bell symbolises hope, strength and a positive future.”

It was Ava’s second time at the inspirational chime. In May 2023, she was treated for kidney cancer. She had chemotherapy to shrink tumours, then surgery to remove her left kidney.

Ava rang the bell to celebrate remission in January, 2024. But six months later a tumour was found in her chest. Her treatment included chemotherapy.

Due to that, Ava also underwent fertility treatment surgery and had an ovary removed to freeze and preserve, in the hope she can have children one day.

Chloe said: “Ava has beaten cancer once, and she’s beaten it again. She’s in remission, and she’s happy and healthy.

“She’s been fighting for her life the whole time. She’s looked cancer in the face two times with a smile. She is my strength.”