In July 2017 Mark was diagnosed with myasthenia gravis, a chronic neuromuscular autoimmune disease, after noticing difficulty with moving his muscles in the right way.
In 2016, just after her 18th birthday, performing arts student Crystal was diagnosed with osteosarcoma, bone cancer.
Maisie was diagnosed with Non-Hodgkin lymphoma at the start of her third and final year of studying for a history degree.
Jody, a mother of two, was 22 when she was diagnosed with cervical cancer. After treatment shrunk a tumour on her cervix, Jody had a hysterectomy, leaving her infertile and going through early menopause.
Harry was diagnosed with acute lymphoblastic leukaemia aged seven. Hear about his and Floppychops' story from their mum.
For Libby, what started as a sharp back pain after a music festival, eventually led to a diagnosis of a malignant tumour of her spinal cord.
Lucy was diagnosed with cancer and started chemotherapy just a few days before her 16th birthday. Her mum Claire shared her story with us.
When Sofyan was nine years old,his mum spotted a lump on his leg. As a keen footballer, they assumed it could be a growing muscle, but went to hospital as a precaution. Eight hours and several tests later, they were told he had bone cancer.
CLIC Sargent employs 120 social workers across the UK. They are the expert friend when cancer threatens to destroy young lives. Here Orlando, one of our social workers in Birmingham, talks about his job.
Seren started feeling unwell during her first year at university and thought it was due to going out too much.