The famous singer next to Stanley Baker is Ivor Emmanual who starts the song, who was the main singer with the Imperial Choir, and played a private soldier in the film.
Stanley Baker was born in Blaenllechau and when he died another famous singer Harry Secombe who was his best friend, went back to the location and spread Stanley Baker's ashes there.
Meant to say the other fact when you watch the film was when they line up three ranks to fire Front Rank/Centre Rank and Rear Rank, look to the rear rank for different rifles, first one who spots the rifle make wins!! The simply ran out of "proper" rifles of the period!!