Several dancing professionals holding cinema dancing class - great.
Empress Room, Kensington, London.
Dancing experts showing the public how to dance marking some of the usual mistakes - sort of cinema dancing class. Professional dancers Phyllis Tailor and Charles Grimshaw dance in a salon with several more people sitting, watching them. A man comes and corrects the position of Phyllis' hand - "they pretend they are just ordinary folk making just ordinary mistakes like this wrong position of the arm" - voiceover says. Other dancers stand up and start dancing with voiceover pointing at mistakes. Interestingly - one of mistakes was a too tight frock - no freedom of movement. Several shots of couples trying 'swing step' shown by a couple who recently returned from America.
Note: may be Phyllis Taylor rather than Tailor - JH.