Arthur Salters-Hoult, from Wallsend, North Tyneside, was diagnosed with Acute Lymphoblastic Leukaemia (ALL) on March 17, which is a type of blood cancer that affects white blood cells, after lumps began to appear on his head and t https://youtube.com/live/QL1P7ayDg60?feature=share https://youtube.com/live/7W0yod7WLhA?feature=share https://youtube.com/live/ocPCpv2PGSg?feature=share https://youtube.com/live/fVOe8ZgJILg?feature=share