Sir Alex Ferguson is starring in an advert warning people about lung cancer.
In the advert, he talks about losing both his parents to the disease.
He stresses the importance of getting an early diagnosis so sufferers can have more time with their families.
Sir Alex Ferguson's memoir has become a record breaker as the fastest-selling non-fiction book.
The book, called simply My Autobiography, has echoed his managerial success with Manchester United by becoming a champion in the publishing world, selling 115,547 copies in a week.
Fergie's hardback book which costs £25 has notched up the biggest first-week sale for a non-fiction title since official records began 15 years ago, according to industry magazine The Bookseller.
The previous record-holder was Delia Smith's How To Cook: Book Two which shifted 112,000 copies in its first week, nearly 14 years ago.
Sir Alex's book was well ahead of many other big name memoirs for their first week on the shelves, including Tony Blair's book A Journey which sold 92,000 copies three years ago and David Beckham's My Side, which achieved 86,000 first-week sales a decade ago.
The ex-United boss created a huge buzz with the publication of his book.
Thousands of football fans have queued in Manchester to meet Sir Alex Ferguson and pick up a signed copy of his new autobiography.Read the full story ›
Former Manchester United captain Roy Keane has hit back at criticism from his old manager Sir Alex Ferguson by saying he doesn't know the meaning of loyalty.
In his book Sir Alex said Keane overstepped the mark when he was at the club.
A glimpse of part two of our interview with Sir Alex Ferguson to be broadcast on Granada Reports on Wednesday, October 23 at 6pm.
Sir Alex talks about his surprise on the day his statue was unveiled at Old Trafford.