The mother of a girl diagnosed with a rare blood cancer is urging people to join the stem cell register after her daughter's relapse.

Heidi Howson, from Sheffield, was diagnosed with acute lymphoblastic leukaemia shortly before her sixth birthday in 2022 and finished her treatment in November.

However, last week, the family was told the cancer had returned and that Heidi, from Sheffield, would need further treatment, which could include a bone marrow transplant.

Mum Lucy, 38, said: "We've always been really active and keen to help other people where we can and unfortunately now it's our turn to ask for help."