In the video posted on Wednesday, 19 November 2025, he expressed immense pride in his son, describing him as a "confident, kind, wonderful young man".
He contrasted his close relationship with his son with his own distant relationship with his father, stating his determination to foster a different bond.
Sir Keir also addressed the difficulties young men encounter "growing up in this day and age".
This video was released as the government introduced its inaugural comprehensive men's health strategy.