During a segment on Heart Breakfast, Claudia Winkleman accidentally swore live on air while speaking with a school pupil, Finley. She believed that the caller was no longer on the line when she expressed her frustration with a slip of the tongue, saying 'f*** sake'. This incident occurred while Winkleman was discussing her ongoing presence on the show following a break, alongside co-hosts Amanda Holden and Jamie Theakston.

Upon realizing that Finley was still listening, Winkleman was visibly embarrassed and immediately began to apologise to the child, who reassured her that it was all right and that no harm was done. The moment served as an unexpected, humorous highlight of the show's live broadcast, although it raised discussions among audiences about swearing in family-friendly contexts, particularly in children's programming.

This incident highlights the potential pitfalls of live broadcasting, especially when it involves guests of a young age. While Winkleman's response was quick and sincere, it brings attention to the need for presenters to remain mindful of their language when engaging with younger audiences, emphasizing the responsibility that comes with public platforms. The audience's reaction to the incident seems to have been largely forgiving, considering it was a genuine mistake during a light-hearted segment.