A brave big brother has been hailed as a real life super hero after bravely agreeing to endure the pain of donating bone marrow - to his three-year-old sibling.

Ollie Cripps, three, was diagnosed with acute myeloid leukaemia and desperately needed a transplant after relapsing, despite months of chemotherapy.

Luckily, brother Finley, five, was found to be a match - and will bravely undergo the gruelling surgery next month.