Completely blind by the age of 22, Mark Pollock rowed at the Commonwealth Games and completed marathons and polar expeditions. Natasha Sayee finds out how Mark stays positive.

After her husband's death, Dr Susan Phoenix suffered from deep depression. She tells Natasha Sayee how a voyage of self-discovery helped to bring hope to others dealing with grief.

Despite battling serious illness for a decade, Noleen Adair has worked tirelessly for women with breast cancer, with the colourful and glamorous Pretty in Pink Charity.

At the age of 10, Richard Moore was blinded by a British soldier, but the two are now friends. Presenter Natasha Sayee hears about Richard's Children in Crossfire charity.