Sadly Streatham Locarno has long gone.
A resident dance band at either end plus the RM's Dance Orchestra
I remember a night I was there when a Cmd Bosun did his Alphonso the Performing Flea turn. This flea was the only one capable of performing three somersaults to the RM drummers rolls. He failed on the third attempt
Only for the Bosun to go on hands and knees looking for him
He lifts a young ladies skirt discreetly grabbing a" flea" only to open his hands and say That's not bloody Alphonso.