This is a duplicate of the story PRINCESS MARGARET AT ST. PANCRAS on the same tape - Film ID 2197.01.
Princess Margaret leaving car and is surrounded by crowd. She shakes hands with several women on her arrival to Hopscotch Inn Children's Club at St. Pancras, London. Children playing ring o ring of roses, Princess Margaret looking on . Various shots of Princess Margaret walking around with a woman, watching the children playing. This is, according to the old record, Princess Margaret's first public engagement.
Date found in the old file 08/04/1946.