Warner Bros Studios:The Ascot horse race sequences were shot inside Stage 12 and Stage 18 at Warner Bros Studios. Stage 04, Stage 07, Stage 08 and Stage 11 were also used. The Ballroom sequence was shot on Stage 16.
Hennesy Street (then known as Tenement Street) was also used for the song With A Little Bit Of Luck.
Despite appearances, the entire movie was shot on soundstages at Warner Bros.
An entire soundstage was used just for the hair and make-up for the Ascot scenes.