Full title reads: "Southampton. Carnival Week. See 4,000 schoolchildren 'all as one' in massed physical training and 'help the Hospitals to help you'."
Large number of school boys and girls do massed pt / keep fit demonstration. Lots of exercises, skipping, leap frog. A very firm woman is calling out instructions. This looks like a practice for a display in the future as there is no-one in the stadium. The hymn 'Abide With Me' is played over the tannoy system.