Lionel Blair was a well-known British entertainer, dancer, and television personality. He did appear in various television programs and films, but not with a specific group called "His Dancers."
It is likely you are thinking of one of the following:
* Lionel Blair's Dance Shows: Blair was often involved in various dance shows, sometimes featuring professional dancers. These could include specific shows on British television or stage productions.
* Lionel Blair's Solo Appearances: Blair had a long career in television, appearing in shows like "Sunday Night at the London Palladium," "The Good Old Days," and "The Generation Game." He also had roles in films like "Carry On Regardless" and "The Plank."
To be more helpful, could you please clarify what you are looking for? Do you know the name of a specific television show or film Lionel Blair was in? Or are you looking for information about his dance career in general?