Dame Esther Rantzen's career included a pivotal moment on her popular BBC One show, 'That's Life!', where she revealed the extraordinary story of Nicholas Winton to a global audience in 1988. The show, which Rantzen presented from 1973 to 1994, evolved under her guidance from a consumer rights program into a significant issues-based series, captivating millions of viewers.

The 'That's Life!' episode became a career-defining moment for Rantzen and brought to light the remarkable, yet long-unreported, humanitarian efforts of Sir Nicholas Winton. He had organized the rescue of 669 children, primarily Jewish, from Czechoslovakia in 1939 before it was occupied by Nazi forces.

Rantzen learned of Winton's work through a scrapbook found by his wife, which detailed the names of the children he had saved. Winton had worked tirelessly to secure sponsorship and find homes for these children in Britain, navigating complex political obstacles and border closures. His efforts were facilitated by a House of Commons ruling that permitted young refugees into the country.

When Rantzen contacted Winton, she discovered he felt he had not saved enough children. Devastated by his self-perceived failure, Rantzen invited him onto 'That's Life!' to demonstrate the profound impact of his actions. During the broadcast, Winton's scrapbook was presented, and two of the children he had rescued, Vera Gissing and Lady Milena Grenfell-Baines, revealed themselves to him on air.

Sir Nicholas Winton's humanitarian work went largely unrecognized for nearly five decades. His quiet dedication included placing photographs of the children in British magazines to aid in finding them homes and arranging for their travel and initial accommodation. This hidden history only came to light when his wife discovered the scrapbook, which was then shared with Holocaust researchers.

The revelation on 'That's Life!' transformed Winton's public profile, leading to his knighthood in 2003 for his humanitarian contributions. The broadcast underscored Rantzen's skill in transforming a personal story into a national and international event, highlighting the value of every life saved.

Rantzen, who also founded the charities Childline and The Silver Line, has a lasting legacy in both broadcasting and charitable work. The 'That's Life!' segment featuring Winton remains one of television's most poignant and impactful moments, a testament to the power of storytelling and the courage of individuals.

The broadcast not only honored Winton's past achievements but also served as a powerful reminder of the ongoing need for compassion and action in times of crisis. The enduring impact of this single episode continues to inspire.